638188370

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{683}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 1228639104

約数和(自身を除く): 590450734

約数列:

[1, 2, 5, 10, 41, 43, 53, 82, 86, 106, 205, 215, 265, 410, 430, 530, 683, 1366, 1763, 2173, 2279, 3415, 3526, 4346, 4558, 6830, 8815, 10865, 11395, 17630, 21730, 22790, 28003, 29369, 36199, 56006, 58738, 72398, 93439, 140015, 146845, 180995, 186878, 280030, 293690, 361990, 467195, 934390, 1204129, 1484159, 1556557, 2408258, 2968318, 3113114, 6020645, 7420795, 7782785, 12041290, 14841590, 15565570, 63818837, 127637674, 319094185, 638188370]

約数ペア:

[(1, 638188370), (2, 319094185), (5, 127637674), (10, 63818837), (41, 15565570), (43, 14841590), (53, 12041290), (82, 7782785), (86, 7420795), (106, 6020645), (205, 3113114), (215, 2968318), (265, 2408258), (410, 1556557), (430, 1484159), (530, 1204129), (683, 934390), (1366, 467195), (1763, 361990), (2173, 293690), (2279, 280030), (3415, 186878), (3526, 180995), (4346, 146845), (4558, 140015), (6830, 93439), (8815, 72398), (10865, 58738), (11395, 56006), (17630, 36199), (21730, 29369), (22790, 28003)]