21211320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13597}}^1$

素因数の和:13624

約数の個数: 64

約数和(自身を含む): 68533920

約数和(自身を除く): 47322600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13597, 27194, 40791, 54388, 67985, 81582, 108776, 135970, 163164, 176761, 203955, 271940, 326328, 353522, 407910, 530283, 543880, 707044, 815820, 883805, 1060566, 1414088, 1631640, 1767610, 2121132, 2651415, 3535220, 4242264, 5302830, 7070440, 10605660, 21211320]

約数ペア:

[(1, 21211320), (2, 10605660), (3, 7070440), (4, 5302830), (5, 4242264), (6, 3535220), (8, 2651415), (10, 2121132), (12, 1767610), (13, 1631640), (15, 1414088), (20, 1060566), (24, 883805), (26, 815820), (30, 707044), (39, 543880), (40, 530283), (52, 407910), (60, 353522), (65, 326328), (78, 271940), (104, 203955), (120, 176761), (130, 163164), (156, 135970), (195, 108776), (260, 81582), (312, 67985), (390, 54388), (520, 40791), (780, 27194), (1560, 13597)]