639444240

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{15581}}^1$

素因数の和:15622

約数の個数: 160

約数和(自身を含む): 2318601600

約数和(自身を除く): 1679157360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 27, 30, 36, 38, 40, 45, 48, 54, 57, 60, 72, 76, 80, 90, 95, 108, 114, 120, 135, 144, 152, 171, 180, 190, 216, 228, 240, 270, 285, 304, 342, 360, 380, 432, 456, 513, 540, 570, 684, 720, 760, 855, 912, 1026, 1080, 1140, 1368, 1520, 1710, 2052, 2160, 2280, 2565, 2736, 3420, 4104, 4560, 5130, 6840, 8208, 10260, 13680, 15581, 20520, 31162, 41040, 46743, 62324, 77905, 93486, 124648, 140229, 155810, 186972, 233715, 249296, 280458, 296039, 311620, 373944, 420687, 467430, 560916, 592078, 623240, 701145, 747888, 841374, 888117, 934860, 1121832, 1184156, 1246480, 1402290, 1480195, 1682748, 1776234, 1869720, 2103435, 2243664, 2368312, 2664351, 2804580, 2960390, 3365496, 3552468, 3739440, 4206870, 4440585, 4736624, 5328702, 5609160, 5920780, 6730992, 7104936, 7993053, 8413740, 8881170, 10657404, 11218320, 11841560, 13321755, 14209872, 15986106, 16827480, 17762340, 21314808, 23683120, 26643510, 31972212, 33654960, 35524680, 39965265, 42629616, 53287020, 63944424, 71049360, 79930530, 106574040, 127888848, 159861060, 213148080, 319722120, 639444240]

約数ペア:

[(1, 639444240), (2, 319722120), (3, 213148080), (4, 159861060), (5, 127888848), (6, 106574040), (8, 79930530), (9, 71049360), (10, 63944424), (12, 53287020), (15, 42629616), (16, 39965265), (18, 35524680), (19, 33654960), (20, 31972212), (24, 26643510), (27, 23683120), (30, 21314808), (36, 17762340), (38, 16827480), (40, 15986106), (45, 14209872), (48, 13321755), (54, 11841560), (57, 11218320), (60, 10657404), (72, 8881170), (76, 8413740), (80, 7993053), (90, 7104936), (95, 6730992), (108, 5920780), (114, 5609160), (120, 5328702), (135, 4736624), (144, 4440585), (152, 4206870), (171, 3739440), (180, 3552468), (190, 3365496), (216, 2960390), (228, 2804580), (240, 2664351), (270, 2368312), (285, 2243664), (304, 2103435), (342, 1869720), (360, 1776234), (380, 1682748), (432, 1480195), (456, 1402290), (513, 1246480), (540, 1184156), (570, 1121832), (684, 934860), (720, 888117), (760, 841374), (855, 747888), (912, 701145), (1026, 623240), (1080, 592078), (1140, 560916), (1368, 467430), (1520, 420687), (1710, 373944), (2052, 311620), (2160, 296039), (2280, 280458), (2565, 249296), (2736, 233715), (3420, 186972), (4104, 155810), (4560, 140229), (5130, 124648), (6840, 93486), (8208, 77905), (10260, 62324), (13680, 46743), (15581, 41040), (20520, 31162)]