1638243828

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{205913}}^1$

素因数の和:205953

約数の個数: 72

約数和(自身を含む): 4722019848

約数和(自身を除く): 3083776020

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 17, 18, 26, 34, 36, 39, 51, 52, 68, 78, 102, 117, 153, 156, 204, 221, 234, 306, 442, 468, 612, 663, 884, 1326, 1989, 2652, 3978, 7956, 205913, 411826, 617739, 823652, 1235478, 1853217, 2470956, 2676869, 3500521, 3706434, 5353738, 7001042, 7412868, 8030607, 10501563, 10707476, 14002084, 16061214, 21003126, 24091821, 31504689, 32122428, 42006252, 45506773, 48183642, 63009378, 91013546, 96367284, 126018756, 136520319, 182027092, 273040638, 409560957, 546081276, 819121914, 1638243828]

約数ペア:

[(1, 1638243828), (2, 819121914), (3, 546081276), (4, 409560957), (6, 273040638), (9, 182027092), (12, 136520319), (13, 126018756), (17, 96367284), (18, 91013546), (26, 63009378), (34, 48183642), (36, 45506773), (39, 42006252), (51, 32122428), (52, 31504689), (68, 24091821), (78, 21003126), (102, 16061214), (117, 14002084), (153, 10707476), (156, 10501563), (204, 8030607), (221, 7412868), (234, 7001042), (306, 5353738), (442, 3706434), (468, 3500521), (612, 2676869), (663, 2470956), (884, 1853217), (1326, 1235478), (1989, 823652), (2652, 617739), (3978, 411826), (7956, 205913)]