20868180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{499}}^1$

素因数の和:569

約数の個数: 96

約数和(自身を含む): 63504000

約数和(自身を除く): 42635820

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 41, 51, 60, 68, 82, 85, 102, 123, 164, 170, 204, 205, 246, 255, 340, 410, 492, 499, 510, 615, 697, 820, 998, 1020, 1230, 1394, 1497, 1996, 2091, 2460, 2495, 2788, 2994, 3485, 4182, 4990, 5988, 6970, 7485, 8364, 8483, 9980, 10455, 13940, 14970, 16966, 20459, 20910, 25449, 29940, 33932, 40918, 41820, 42415, 50898, 61377, 81836, 84830, 101796, 102295, 122754, 127245, 169660, 204590, 245508, 254490, 306885, 347803, 409180, 508980, 613770, 695606, 1043409, 1227540, 1391212, 1739015, 2086818, 3478030, 4173636, 5217045, 6956060, 10434090, 20868180]

約数ペア:

[(1, 20868180), (2, 10434090), (3, 6956060), (4, 5217045), (5, 4173636), (6, 3478030), (10, 2086818), (12, 1739015), (15, 1391212), (17, 1227540), (20, 1043409), (30, 695606), (34, 613770), (41, 508980), (51, 409180), (60, 347803), (68, 306885), (82, 254490), (85, 245508), (102, 204590), (123, 169660), (164, 127245), (170, 122754), (204, 102295), (205, 101796), (246, 84830), (255, 81836), (340, 61377), (410, 50898), (492, 42415), (499, 41820), (510, 40918), (615, 33932), (697, 29940), (820, 25449), (998, 20910), (1020, 20459), (1230, 16966), (1394, 14970), (1497, 13940), (1996, 10455), (2091, 9980), (2460, 8483), (2495, 8364), (2788, 7485), (2994, 6970), (3485, 5988), (4182, 4990)]