18917940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1091}}^1$

素因数の和:1137

約数の個数: 72

約数和(自身を含む): 56320992

約数和(自身を除く): 37403052

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 289, 340, 510, 578, 867, 1020, 1091, 1156, 1445, 1734, 2182, 2890, 3273, 3468, 4335, 4364, 5455, 5780, 6546, 8670, 10910, 13092, 16365, 17340, 18547, 21820, 32730, 37094, 55641, 65460, 74188, 92735, 111282, 185470, 222564, 278205, 315299, 370940, 556410, 630598, 945897, 1112820, 1261196, 1576495, 1891794, 3152990, 3783588, 4729485, 6305980, 9458970, 18917940]

約数ペア:

[(1, 18917940), (2, 9458970), (3, 6305980), (4, 4729485), (5, 3783588), (6, 3152990), (10, 1891794), (12, 1576495), (15, 1261196), (17, 1112820), (20, 945897), (30, 630598), (34, 556410), (51, 370940), (60, 315299), (68, 278205), (85, 222564), (102, 185470), (170, 111282), (204, 92735), (255, 74188), (289, 65460), (340, 55641), (510, 37094), (578, 32730), (867, 21820), (1020, 18547), (1091, 17340), (1156, 16365), (1445, 13092), (1734, 10910), (2182, 8670), (2890, 6546), (3273, 5780), (3468, 5455), (4335, 4364)]