20446972

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 46116000

約数和(自身を除く): 25669028

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 29, 52, 58, 91, 116, 149, 169, 182, 203, 298, 338, 364, 377, 406, 596, 676, 754, 812, 1043, 1183, 1508, 1937, 2086, 2366, 2639, 3874, 4172, 4321, 4732, 4901, 5278, 7748, 8642, 9802, 10556, 13559, 17284, 19604, 25181, 27118, 30247, 34307, 50362, 54236, 56173, 60494, 68614, 100724, 112346, 120988, 137228, 176267, 224692, 352534, 393211, 705068, 730249, 786422, 1460498, 1572844, 2920996, 5111743, 10223486, 20446972]

約数ペア:

[(1, 20446972), (2, 10223486), (4, 5111743), (7, 2920996), (13, 1572844), (14, 1460498), (26, 786422), (28, 730249), (29, 705068), (52, 393211), (58, 352534), (91, 224692), (116, 176267), (149, 137228), (169, 120988), (182, 112346), (203, 100724), (298, 68614), (338, 60494), (364, 56173), (377, 54236), (406, 50362), (596, 34307), (676, 30247), (754, 27118), (812, 25181), (1043, 19604), (1183, 17284), (1508, 13559), (1937, 10556), (2086, 9802), (2366, 8642), (2639, 7748), (3874, 5278), (4172, 4901), (4321, 4732)]