18979740520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{12487}}^1$

素因数の和:12627

約数の個数: 128

約数和(自身を含む): 47834035200

約数和(自身を除く): 28854294680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 79, 104, 130, 148, 158, 185, 260, 296, 316, 370, 395, 481, 520, 632, 740, 790, 962, 1027, 1480, 1580, 1924, 2054, 2405, 2923, 3160, 3848, 4108, 4810, 5135, 5846, 8216, 9620, 10270, 11692, 12487, 14615, 19240, 20540, 23384, 24974, 29230, 37999, 41080, 49948, 58460, 62435, 75998, 99896, 116920, 124870, 151996, 162331, 189995, 249740, 303992, 324662, 379990, 462019, 499480, 649324, 759980, 811655, 924038, 986473, 1298648, 1519960, 1623310, 1848076, 1972946, 2310095, 3246620, 3696152, 3945892, 4620190, 4932365, 6006247, 6493240, 7891784, 9240380, 9864730, 12012494, 12824149, 18480760, 19729460, 24024988, 25648298, 30031235, 36499501, 39458920, 48049976, 51296596, 60062470, 64120745, 72999002, 102593192, 120124940, 128241490, 145998004, 182497505, 240249880, 256482980, 291996008, 364995010, 474493513, 512965960, 729990020, 948987026, 1459980040, 1897974052, 2372467565, 3795948104, 4744935130, 9489870260, 18979740520]

約数ペア:

[(1, 18979740520), (2, 9489870260), (4, 4744935130), (5, 3795948104), (8, 2372467565), (10, 1897974052), (13, 1459980040), (20, 948987026), (26, 729990020), (37, 512965960), (40, 474493513), (52, 364995010), (65, 291996008), (74, 256482980), (79, 240249880), (104, 182497505), (130, 145998004), (148, 128241490), (158, 120124940), (185, 102593192), (260, 72999002), (296, 64120745), (316, 60062470), (370, 51296596), (395, 48049976), (481, 39458920), (520, 36499501), (632, 30031235), (740, 25648298), (790, 24024988), (962, 19729460), (1027, 18480760), (1480, 12824149), (1580, 12012494), (1924, 9864730), (2054, 9240380), (2405, 7891784), (2923, 6493240), (3160, 6006247), (3848, 4932365), (4108, 4620190), (4810, 3945892), (5135, 3696152), (5846, 3246620), (8216, 2310095), (9620, 1972946), (10270, 1848076), (11692, 1623310), (12487, 1519960), (14615, 1298648), (19240, 986473), (20540, 924038), (23384, 811655), (24974, 759980), (29230, 649324), (37999, 499480), (41080, 462019), (49948, 379990), (58460, 324662), (62435, 303992), (75998, 249740), (99896, 189995), (116920, 162331), (124870, 151996)]