18989910

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1153}}^1$

素因数の和:1230

約数の個数: 64

約数和(自身を含む): 51514560

約数和(自身を除く): 32524650

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 61, 90, 122, 135, 183, 270, 305, 366, 549, 610, 915, 1098, 1153, 1647, 1830, 2306, 2745, 3294, 3459, 5490, 5765, 6918, 8235, 10377, 11530, 16470, 17295, 20754, 31131, 34590, 51885, 62262, 70333, 103770, 140666, 155655, 210999, 311310, 351665, 421998, 632997, 703330, 1054995, 1265994, 1898991, 2109990, 3164985, 3797982, 6329970, 9494955, 18989910]

約数ペア:

[(1, 18989910), (2, 9494955), (3, 6329970), (5, 3797982), (6, 3164985), (9, 2109990), (10, 1898991), (15, 1265994), (18, 1054995), (27, 703330), (30, 632997), (45, 421998), (54, 351665), (61, 311310), (90, 210999), (122, 155655), (135, 140666), (183, 103770), (270, 70333), (305, 62262), (366, 51885), (549, 34590), (610, 31131), (915, 20754), (1098, 17295), (1153, 16470), (1647, 11530), (1830, 10377), (2306, 8235), (2745, 6918), (3294, 5765), (3459, 5490)]