21052980

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2999}}^1$

素因数の和:3030

約数の個数: 96

約数和(自身を含む): 70560000

約数和(自身を除く): 49507020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 27, 30, 36, 39, 45, 52, 54, 60, 65, 78, 90, 108, 117, 130, 135, 156, 180, 195, 234, 260, 270, 351, 390, 468, 540, 585, 702, 780, 1170, 1404, 1755, 2340, 2999, 3510, 5998, 7020, 8997, 11996, 14995, 17994, 26991, 29990, 35988, 38987, 44985, 53982, 59980, 77974, 80973, 89970, 107964, 116961, 134955, 155948, 161946, 179940, 194935, 233922, 269910, 323892, 350883, 389870, 404865, 467844, 539820, 584805, 701766, 779740, 809730, 1052649, 1169610, 1403532, 1619460, 1754415, 2105298, 2339220, 3508830, 4210596, 5263245, 7017660, 10526490, 21052980]

約数ペア:

[(1, 21052980), (2, 10526490), (3, 7017660), (4, 5263245), (5, 4210596), (6, 3508830), (9, 2339220), (10, 2105298), (12, 1754415), (13, 1619460), (15, 1403532), (18, 1169610), (20, 1052649), (26, 809730), (27, 779740), (30, 701766), (36, 584805), (39, 539820), (45, 467844), (52, 404865), (54, 389870), (60, 350883), (65, 323892), (78, 269910), (90, 233922), (108, 194935), (117, 179940), (130, 161946), (135, 155948), (156, 134955), (180, 116961), (195, 107964), (234, 89970), (260, 80973), (270, 77974), (351, 59980), (390, 53982), (468, 44985), (540, 38987), (585, 35988), (702, 29990), (780, 26991), (1170, 17994), (1404, 14995), (1755, 11996), (2340, 8997), (2999, 7020), (3510, 5998)]