28953040

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:440

約数の個数: 80

約数和(自身を含む): 72651600

約数和(自身を除く): 43698560

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 61, 68, 80, 85, 122, 136, 170, 244, 272, 305, 340, 349, 488, 610, 680, 698, 976, 1037, 1220, 1360, 1396, 1745, 2074, 2440, 2792, 3490, 4148, 4880, 5185, 5584, 5933, 6980, 8296, 10370, 11866, 13960, 16592, 20740, 21289, 23732, 27920, 29665, 41480, 42578, 47464, 59330, 82960, 85156, 94928, 106445, 118660, 170312, 212890, 237320, 340624, 361913, 425780, 474640, 723826, 851560, 1447652, 1703120, 1809565, 2895304, 3619130, 5790608, 7238260, 14476520, 28953040]

約数ペア:

[(1, 28953040), (2, 14476520), (4, 7238260), (5, 5790608), (8, 3619130), (10, 2895304), (16, 1809565), (17, 1703120), (20, 1447652), (34, 851560), (40, 723826), (61, 474640), (68, 425780), (80, 361913), (85, 340624), (122, 237320), (136, 212890), (170, 170312), (244, 118660), (272, 106445), (305, 94928), (340, 85156), (349, 82960), (488, 59330), (610, 47464), (680, 42578), (698, 41480), (976, 29665), (1037, 27920), (1220, 23732), (1360, 21289), (1396, 20740), (1745, 16592), (2074, 13960), (2440, 11866), (2792, 10370), (3490, 8296), (4148, 6980), (4880, 5933), (5185, 5584)]