20879820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8923}}^1$

素因数の和:8951

約数の個数: 72

約数和(自身を含む): 68215056

約数和(自身を除く): 47335236

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8923, 17846, 26769, 35692, 44615, 53538, 80307, 89230, 107076, 115999, 133845, 160614, 178460, 231998, 267690, 321228, 347997, 401535, 463996, 535380, 579995, 695994, 803070, 1043991, 1159990, 1391988, 1606140, 1739985, 2087982, 2319980, 3479970, 4175964, 5219955, 6959940, 10439910, 20879820]

約数ペア:

[(1, 20879820), (2, 10439910), (3, 6959940), (4, 5219955), (5, 4175964), (6, 3479970), (9, 2319980), (10, 2087982), (12, 1739985), (13, 1606140), (15, 1391988), (18, 1159990), (20, 1043991), (26, 803070), (30, 695994), (36, 579995), (39, 535380), (45, 463996), (52, 401535), (60, 347997), (65, 321228), (78, 267690), (90, 231998), (117, 178460), (130, 160614), (156, 133845), (180, 115999), (195, 107076), (234, 89230), (260, 80307), (390, 53538), (468, 44615), (585, 35692), (780, 26769), (1170, 17846), (2340, 8923)]