20208858280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1\times {\mathrm{3191}}^1$

素因数の和:3875

約数の個数: 128

約数和(自身を含む): 51641452800

約数和(自身を除く): 31432594520

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 641, 760, 988, 1235, 1282, 1976, 2470, 2564, 3191, 3205, 4940, 5128, 6382, 6410, 8333, 9880, 12179, 12764, 12820, 15955, 16666, 24358, 25528, 25640, 31910, 33332, 41483, 41665, 48716, 60629, 60895, 63820, 66664, 82966, 83330, 97432, 121258, 121790, 127640, 158327, 165932, 166660, 207415, 242516, 243580, 303145, 316654, 331864, 333320, 414830, 485032, 487160, 606290, 633308, 788177, 791635, 829660, 1212580, 1266616, 1576354, 1583270, 1659320, 2045431, 2425160, 3152708, 3166540, 3940885, 4090862, 6305416, 6333080, 7881770, 8181724, 10227155, 15763540, 16363448, 20454310, 26590603, 31527080, 38863189, 40908620, 53181206, 77726378, 81817240, 106362412, 132953015, 155452756, 194315945, 212724824, 265906030, 310905512, 388631890, 505221457, 531812060, 777263780, 1010442914, 1063624120, 1554527560, 2020885828, 2526107285, 4041771656, 5052214570, 10104429140, 20208858280]

約数ペア:

[(1, 20208858280), (2, 10104429140), (4, 5052214570), (5, 4041771656), (8, 2526107285), (10, 2020885828), (13, 1554527560), (19, 1063624120), (20, 1010442914), (26, 777263780), (38, 531812060), (40, 505221457), (52, 388631890), (65, 310905512), (76, 265906030), (95, 212724824), (104, 194315945), (130, 155452756), (152, 132953015), (190, 106362412), (247, 81817240), (260, 77726378), (380, 53181206), (494, 40908620), (520, 38863189), (641, 31527080), (760, 26590603), (988, 20454310), (1235, 16363448), (1282, 15763540), (1976, 10227155), (2470, 8181724), (2564, 7881770), (3191, 6333080), (3205, 6305416), (4940, 4090862), (5128, 3940885), (6382, 3166540), (6410, 3152708), (8333, 2425160), (9880, 2045431), (12179, 1659320), (12764, 1583270), (12820, 1576354), (15955, 1266616), (16666, 1212580), (24358, 829660), (25528, 791635), (25640, 788177), (31910, 633308), (33332, 606290), (41483, 487160), (41665, 485032), (48716, 414830), (60629, 333320), (60895, 331864), (63820, 316654), (66664, 303145), (82966, 243580), (83330, 242516), (97432, 207415), (121258, 166660), (121790, 165932), (127640, 158327)]