120921520

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:494

約数の個数: 80

約数和(自身を含む): 290606400

約数和(自身を除く): 169684880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 71, 80, 122, 142, 244, 284, 305, 349, 355, 488, 568, 610, 698, 710, 976, 1136, 1220, 1396, 1420, 1745, 2440, 2792, 2840, 3490, 4331, 4880, 5584, 5680, 6980, 8662, 13960, 17324, 21289, 21655, 24779, 27920, 34648, 42578, 43310, 49558, 69296, 85156, 86620, 99116, 106445, 123895, 170312, 173240, 198232, 212890, 247790, 340624, 346480, 396464, 425780, 495580, 851560, 991160, 1511519, 1703120, 1982320, 3023038, 6046076, 7557595, 12092152, 15115190, 24184304, 30230380, 60460760, 120921520]

約数ペア:

[(1, 120921520), (2, 60460760), (4, 30230380), (5, 24184304), (8, 15115190), (10, 12092152), (16, 7557595), (20, 6046076), (40, 3023038), (61, 1982320), (71, 1703120), (80, 1511519), (122, 991160), (142, 851560), (244, 495580), (284, 425780), (305, 396464), (349, 346480), (355, 340624), (488, 247790), (568, 212890), (610, 198232), (698, 173240), (710, 170312), (976, 123895), (1136, 106445), (1220, 99116), (1396, 86620), (1420, 85156), (1745, 69296), (2440, 49558), (2792, 43310), (2840, 42578), (3490, 34648), (4331, 27920), (4880, 24779), (5584, 21655), (5680, 21289), (6980, 17324), (8662, 13960)]