20858590960

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1\times {\mathrm{419}}^1$

素因数の和:743

約数の個数: 160

約数和(自身を含む): 50621760000

約数和(自身を除く): 29763169040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 59, 80, 106, 118, 199, 212, 236, 265, 295, 398, 419, 424, 472, 530, 590, 796, 838, 848, 944, 995, 1060, 1180, 1592, 1676, 1990, 2095, 2120, 2360, 3127, 3184, 3352, 3980, 4190, 4240, 4720, 6254, 6704, 7960, 8380, 10547, 11741, 12508, 15635, 15920, 16760, 21094, 22207, 23482, 24721, 25016, 31270, 33520, 42188, 44414, 46964, 49442, 50032, 52735, 58705, 62540, 83381, 84376, 88828, 93928, 98884, 105470, 111035, 117410, 123605, 125080, 166762, 168752, 177656, 187856, 197768, 210940, 222070, 234820, 247210, 250160, 333524, 355312, 395536, 416905, 421880, 444140, 469640, 494420, 622273, 667048, 833810, 843760, 888280, 939280, 988840, 1244546, 1310213, 1334096, 1667620, 1776560, 1977680, 2489092, 2620426, 3111365, 3335240, 4419193, 4919479, 4978184, 5240852, 6222730, 6551065, 6670480, 8838386, 9838958, 9956368, 10481704, 12445460, 13102130, 17676772, 19677916, 20963408, 22095965, 24597395, 24890920, 26204260, 35353544, 39355832, 44191930, 49194790, 49781840, 52408520, 70707088, 78711664, 88383860, 98389580, 104817040, 176767720, 196779160, 260732387, 353535440, 393558320, 521464774, 1042929548, 1303661935, 2085859096, 2607323870, 4171718192, 5214647740, 10429295480, 20858590960]

約数ペア:

[(1, 20858590960), (2, 10429295480), (4, 5214647740), (5, 4171718192), (8, 2607323870), (10, 2085859096), (16, 1303661935), (20, 1042929548), (40, 521464774), (53, 393558320), (59, 353535440), (80, 260732387), (106, 196779160), (118, 176767720), (199, 104817040), (212, 98389580), (236, 88383860), (265, 78711664), (295, 70707088), (398, 52408520), (419, 49781840), (424, 49194790), (472, 44191930), (530, 39355832), (590, 35353544), (796, 26204260), (838, 24890920), (848, 24597395), (944, 22095965), (995, 20963408), (1060, 19677916), (1180, 17676772), (1592, 13102130), (1676, 12445460), (1990, 10481704), (2095, 9956368), (2120, 9838958), (2360, 8838386), (3127, 6670480), (3184, 6551065), (3352, 6222730), (3980, 5240852), (4190, 4978184), (4240, 4919479), (4720, 4419193), (6254, 3335240), (6704, 3111365), (7960, 2620426), (8380, 2489092), (10547, 1977680), (11741, 1776560), (12508, 1667620), (15635, 1334096), (15920, 1310213), (16760, 1244546), (21094, 988840), (22207, 939280), (23482, 888280), (24721, 843760), (25016, 833810), (31270, 667048), (33520, 622273), (42188, 494420), (44414, 469640), (46964, 444140), (49442, 421880), (50032, 416905), (52735, 395536), (58705, 355312), (62540, 333524), (83381, 250160), (84376, 247210), (88828, 234820), (93928, 222070), (98884, 210940), (105470, 197768), (111035, 187856), (117410, 177656), (123605, 168752), (125080, 166762)]