18001100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:315

約数の個数: 72

約数和(自身を含む): 42945168

約数和(自身を除く): 24944068

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 61, 65, 100, 122, 130, 227, 244, 260, 305, 325, 454, 610, 650, 793, 908, 1135, 1220, 1300, 1525, 1586, 2270, 2951, 3050, 3172, 3965, 4540, 5675, 5902, 6100, 7930, 11350, 11804, 13847, 14755, 15860, 19825, 22700, 27694, 29510, 39650, 55388, 59020, 69235, 73775, 79300, 138470, 147550, 180011, 276940, 295100, 346175, 360022, 692350, 720044, 900055, 1384700, 1800110, 3600220, 4500275, 9000550, 18001100]

約数ペア:

[(1, 18001100), (2, 9000550), (4, 4500275), (5, 3600220), (10, 1800110), (13, 1384700), (20, 900055), (25, 720044), (26, 692350), (50, 360022), (52, 346175), (61, 295100), (65, 276940), (100, 180011), (122, 147550), (130, 138470), (227, 79300), (244, 73775), (260, 69235), (305, 59020), (325, 55388), (454, 39650), (610, 29510), (650, 27694), (793, 22700), (908, 19825), (1135, 15860), (1220, 14755), (1300, 13847), (1525, 11804), (1586, 11350), (2270, 7930), (2951, 6100), (3050, 5902), (3172, 5675), (3965, 4540)]