20992140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8971}}^1$

素因数の和:8999

約数の個数: 72

約数和(自身を含む): 68581968

約数和(自身を除く): 47589828

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8971, 17942, 26913, 35884, 44855, 53826, 80739, 89710, 107652, 116623, 134565, 161478, 179420, 233246, 269130, 322956, 349869, 403695, 466492, 538260, 583115, 699738, 807390, 1049607, 1166230, 1399476, 1614780, 1749345, 2099214, 2332460, 3498690, 4198428, 5248035, 6997380, 10496070, 20992140]

約数ペア:

[(1, 20992140), (2, 10496070), (3, 6997380), (4, 5248035), (5, 4198428), (6, 3498690), (9, 2332460), (10, 2099214), (12, 1749345), (13, 1614780), (15, 1399476), (18, 1166230), (20, 1049607), (26, 807390), (30, 699738), (36, 583115), (39, 538260), (45, 466492), (52, 403695), (60, 349869), (65, 322956), (78, 269130), (90, 233246), (117, 179420), (130, 161478), (156, 134565), (180, 116623), (195, 107652), (234, 89710), (260, 80739), (390, 53826), (468, 44855), (585, 35884), (780, 26913), (1170, 17942), (2340, 8971)]