20939240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:171

約数の個数: 128

約数和(自身を含む): 58786560

約数和(自身を除く): 37847320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 53, 56, 68, 70, 83, 85, 106, 119, 136, 140, 166, 170, 212, 238, 265, 280, 332, 340, 371, 415, 424, 476, 530, 581, 595, 664, 680, 742, 830, 901, 952, 1060, 1162, 1190, 1411, 1484, 1660, 1802, 1855, 2120, 2324, 2380, 2822, 2905, 2968, 3320, 3604, 3710, 4399, 4505, 4648, 4760, 5644, 5810, 6307, 7055, 7208, 7420, 8798, 9010, 9877, 11288, 11620, 12614, 14110, 14840, 17596, 18020, 19754, 21995, 23240, 25228, 28220, 30793, 31535, 35192, 36040, 39508, 43990, 49385, 50456, 56440, 61586, 63070, 74783, 79016, 87980, 98770, 123172, 126140, 149566, 153965, 175960, 197540, 246344, 252280, 299132, 307930, 373915, 395080, 523481, 598264, 615860, 747830, 1046962, 1231720, 1495660, 2093924, 2617405, 2991320, 4187848, 5234810, 10469620, 20939240]

約数ペア:

[(1, 20939240), (2, 10469620), (4, 5234810), (5, 4187848), (7, 2991320), (8, 2617405), (10, 2093924), (14, 1495660), (17, 1231720), (20, 1046962), (28, 747830), (34, 615860), (35, 598264), (40, 523481), (53, 395080), (56, 373915), (68, 307930), (70, 299132), (83, 252280), (85, 246344), (106, 197540), (119, 175960), (136, 153965), (140, 149566), (166, 126140), (170, 123172), (212, 98770), (238, 87980), (265, 79016), (280, 74783), (332, 63070), (340, 61586), (371, 56440), (415, 50456), (424, 49385), (476, 43990), (530, 39508), (581, 36040), (595, 35192), (664, 31535), (680, 30793), (742, 28220), (830, 25228), (901, 23240), (952, 21995), (1060, 19754), (1162, 18020), (1190, 17596), (1411, 14840), (1484, 14110), (1660, 12614), (1802, 11620), (1855, 11288), (2120, 9877), (2324, 9010), (2380, 8798), (2822, 7420), (2905, 7208), (2968, 7055), (3320, 6307), (3604, 5810), (3710, 5644), (4399, 4760), (4505, 4648)]