721717840

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{2083}}^1$

素因数の和:2228

約数の個数: 80

約数和(自身を含む): 1730353536

約数和(自身を除く): 1008635696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 71, 80, 122, 142, 244, 284, 305, 355, 488, 568, 610, 710, 976, 1136, 1220, 1420, 2083, 2440, 2840, 4166, 4331, 4880, 5680, 8332, 8662, 10415, 16664, 17324, 20830, 21655, 33328, 34648, 41660, 43310, 69296, 83320, 86620, 127063, 147893, 166640, 173240, 254126, 295786, 346480, 508252, 591572, 635315, 739465, 1016504, 1183144, 1270630, 1478930, 2033008, 2366288, 2541260, 2957860, 5082520, 5915720, 9021473, 10165040, 11831440, 18042946, 36085892, 45107365, 72171784, 90214730, 144343568, 180429460, 360858920, 721717840]

約数ペア:

[(1, 721717840), (2, 360858920), (4, 180429460), (5, 144343568), (8, 90214730), (10, 72171784), (16, 45107365), (20, 36085892), (40, 18042946), (61, 11831440), (71, 10165040), (80, 9021473), (122, 5915720), (142, 5082520), (244, 2957860), (284, 2541260), (305, 2366288), (355, 2033008), (488, 1478930), (568, 1270630), (610, 1183144), (710, 1016504), (976, 739465), (1136, 635315), (1220, 591572), (1420, 508252), (2083, 346480), (2440, 295786), (2840, 254126), (4166, 173240), (4331, 166640), (4880, 147893), (5680, 127063), (8332, 86620), (8662, 83320), (10415, 69296), (16664, 43310), (17324, 41660), (20830, 34648), (21655, 33328)]