21213660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27197}}^1$

素因数の和:27222

約数の個数: 48

約数和(自身を含む): 63969696

約数和(自身を除く): 42756036

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27197, 54394, 81591, 108788, 135985, 163182, 271970, 326364, 353561, 407955, 543940, 707122, 815910, 1060683, 1414244, 1631820, 1767805, 2121366, 3535610, 4242732, 5303415, 7071220, 10606830, 21213660]

約数ペア:

[(1, 21213660), (2, 10606830), (3, 7071220), (4, 5303415), (5, 4242732), (6, 3535610), (10, 2121366), (12, 1767805), (13, 1631820), (15, 1414244), (20, 1060683), (26, 815910), (30, 707122), (39, 543940), (52, 407955), (60, 353561), (65, 326364), (78, 271970), (130, 163182), (156, 135985), (195, 108788), (260, 81591), (390, 54394), (780, 27197)]