20951970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1733}}^1$

素因数の和:1787

約数の個数: 64

約数和(自身を含む): 55931904

約数和(自身を除く): 34979934

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 31, 39, 62, 65, 78, 93, 130, 155, 186, 195, 310, 390, 403, 465, 806, 930, 1209, 1733, 2015, 2418, 3466, 4030, 5199, 6045, 8665, 10398, 12090, 17330, 22529, 25995, 45058, 51990, 53723, 67587, 107446, 112645, 135174, 161169, 225290, 268615, 322338, 337935, 537230, 675870, 698399, 805845, 1396798, 1611690, 2095197, 3491995, 4190394, 6983990, 10475985, 20951970]

約数ペア:

[(1, 20951970), (2, 10475985), (3, 6983990), (5, 4190394), (6, 3491995), (10, 2095197), (13, 1611690), (15, 1396798), (26, 805845), (30, 698399), (31, 675870), (39, 537230), (62, 337935), (65, 322338), (78, 268615), (93, 225290), (130, 161169), (155, 135174), (186, 112645), (195, 107446), (310, 67587), (390, 53723), (403, 51990), (465, 45058), (806, 25995), (930, 22529), (1209, 17330), (1733, 12090), (2015, 10398), (2418, 8665), (3466, 6045), (4030, 5199)]