20804160

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1667}}^1$

素因数の和:1700

約数の個数: 112

約数和(自身を含む): 71176896

約数和(自身を除く): 50372736

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 130, 156, 160, 192, 195, 208, 240, 260, 312, 320, 390, 416, 480, 520, 624, 780, 832, 960, 1040, 1248, 1560, 1667, 2080, 2496, 3120, 3334, 4160, 5001, 6240, 6668, 8335, 10002, 12480, 13336, 16670, 20004, 21671, 25005, 26672, 33340, 40008, 43342, 50010, 53344, 65013, 66680, 80016, 86684, 100020, 106688, 108355, 130026, 133360, 160032, 173368, 200040, 216710, 260052, 266720, 320064, 325065, 346736, 400080, 433420, 520104, 533440, 650130, 693472, 800160, 866840, 1040208, 1300260, 1386944, 1600320, 1733680, 2080416, 2600520, 3467360, 4160832, 5201040, 6934720, 10402080, 20804160]

約数ペア:

[(1, 20804160), (2, 10402080), (3, 6934720), (4, 5201040), (5, 4160832), (6, 3467360), (8, 2600520), (10, 2080416), (12, 1733680), (13, 1600320), (15, 1386944), (16, 1300260), (20, 1040208), (24, 866840), (26, 800160), (30, 693472), (32, 650130), (39, 533440), (40, 520104), (48, 433420), (52, 400080), (60, 346736), (64, 325065), (65, 320064), (78, 266720), (80, 260052), (96, 216710), (104, 200040), (120, 173368), (130, 160032), (156, 133360), (160, 130026), (192, 108355), (195, 106688), (208, 100020), (240, 86684), (260, 80016), (312, 66680), (320, 65013), (390, 53344), (416, 50010), (480, 43342), (520, 40008), (624, 33340), (780, 26672), (832, 25005), (960, 21671), (1040, 20004), (1248, 16670), (1560, 13336), (1667, 12480), (2080, 10002), (2496, 8335), (3120, 6668), (3334, 6240), (4160, 5001)]