638382420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{272813}}^1$

素因数の和:272841

約数の個数: 72

約数和(自身を含む): 2085390216

約数和(自身を除く): 1447007796

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 272813, 545626, 818439, 1091252, 1364065, 1636878, 2455317, 2728130, 3273756, 3546569, 4092195, 4910634, 5456260, 7093138, 8184390, 9821268, 10639707, 12276585, 14186276, 16368780, 17732845, 21279414, 24553170, 31919121, 35465690, 42558828, 49106340, 53198535, 63838242, 70931380, 106397070, 127676484, 159595605, 212794140, 319191210, 638382420]

約数ペア:

[(1, 638382420), (2, 319191210), (3, 212794140), (4, 159595605), (5, 127676484), (6, 106397070), (9, 70931380), (10, 63838242), (12, 53198535), (13, 49106340), (15, 42558828), (18, 35465690), (20, 31919121), (26, 24553170), (30, 21279414), (36, 17732845), (39, 16368780), (45, 14186276), (52, 12276585), (60, 10639707), (65, 9821268), (78, 8184390), (90, 7093138), (117, 5456260), (130, 4910634), (156, 4092195), (180, 3546569), (195, 3273756), (234, 2728130), (260, 2455317), (390, 1636878), (468, 1364065), (585, 1091252), (780, 818439), (1170, 545626), (2340, 272813)]