30821440

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1$

素因数の和:300

約数の個数: 112

約数和(自身を含む): 81930240

約数和(自身を除く): 51108800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 130, 155, 160, 208, 239, 248, 260, 310, 320, 403, 416, 478, 496, 520, 620, 806, 832, 956, 992, 1040, 1195, 1240, 1612, 1912, 1984, 2015, 2080, 2390, 2480, 3107, 3224, 3824, 4030, 4160, 4780, 4960, 6214, 6448, 7409, 7648, 8060, 9560, 9920, 12428, 12896, 14818, 15296, 15535, 16120, 19120, 24856, 25792, 29636, 31070, 32240, 37045, 38240, 49712, 59272, 62140, 64480, 74090, 76480, 96317, 99424, 118544, 124280, 128960, 148180, 192634, 198848, 237088, 248560, 296360, 385268, 474176, 481585, 497120, 592720, 770536, 963170, 994240, 1185440, 1541072, 1926340, 2370880, 3082144, 3852680, 6164288, 7705360, 15410720, 30821440]

約数ペア:

[(1, 30821440), (2, 15410720), (4, 7705360), (5, 6164288), (8, 3852680), (10, 3082144), (13, 2370880), (16, 1926340), (20, 1541072), (26, 1185440), (31, 994240), (32, 963170), (40, 770536), (52, 592720), (62, 497120), (64, 481585), (65, 474176), (80, 385268), (104, 296360), (124, 248560), (130, 237088), (155, 198848), (160, 192634), (208, 148180), (239, 128960), (248, 124280), (260, 118544), (310, 99424), (320, 96317), (403, 76480), (416, 74090), (478, 64480), (496, 62140), (520, 59272), (620, 49712), (806, 38240), (832, 37045), (956, 32240), (992, 31070), (1040, 29636), (1195, 25792), (1240, 24856), (1612, 19120), (1912, 16120), (1984, 15535), (2015, 15296), (2080, 14818), (2390, 12896), (2480, 12428), (3107, 9920), (3224, 9560), (3824, 8060), (4030, 7648), (4160, 7409), (4780, 6448), (4960, 6214)]