20490610

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 45474048

約数和(自身を除く): 24983438

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 67, 70, 85, 119, 134, 170, 238, 257, 335, 469, 514, 595, 670, 938, 1139, 1190, 1285, 1799, 2278, 2345, 2570, 3598, 4369, 4690, 5695, 7973, 8738, 8995, 11390, 15946, 17219, 17990, 21845, 30583, 34438, 39865, 43690, 61166, 79730, 86095, 120533, 152915, 172190, 241066, 292723, 305830, 585446, 602665, 1205330, 1463615, 2049061, 2927230, 4098122, 10245305, 20490610]

約数ペア:

[(1, 20490610), (2, 10245305), (5, 4098122), (7, 2927230), (10, 2049061), (14, 1463615), (17, 1205330), (34, 602665), (35, 585446), (67, 305830), (70, 292723), (85, 241066), (119, 172190), (134, 152915), (170, 120533), (238, 86095), (257, 79730), (335, 61166), (469, 43690), (514, 39865), (595, 34438), (670, 30583), (938, 21845), (1139, 17990), (1190, 17219), (1285, 15946), (1799, 11390), (2278, 8995), (2345, 8738), (2570, 7973), (3598, 5695), (4369, 4690)]