2021197325

素因数分解:

$5^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:403

約数の個数: 72

約数和(自身を含む): 2994683328

約数和(自身を除く): 973486003

約数列:

[1, 5, 7, 25, 35, 49, 83, 103, 175, 193, 245, 415, 515, 581, 721, 965, 1225, 1351, 2075, 2575, 2905, 3605, 4067, 4825, 5047, 6755, 8549, 9457, 14525, 16019, 18025, 19879, 20335, 25235, 33775, 42745, 47285, 59843, 80095, 99395, 101675, 112133, 126175, 139153, 213725, 236425, 299215, 400475, 418901, 496975, 560665, 695765, 784931, 974071, 1496075, 1649957, 2094505, 2803325, 3478825, 3924655, 4870355, 8249785, 10472525, 11549699, 19623275, 24351775, 41248925, 57748495, 80847893, 288742475, 404239465, 2021197325]

約数ペア:

[(1, 2021197325), (5, 404239465), (7, 288742475), (25, 80847893), (35, 57748495), (49, 41248925), (83, 24351775), (103, 19623275), (175, 11549699), (193, 10472525), (245, 8249785), (415, 4870355), (515, 3924655), (581, 3478825), (721, 2803325), (965, 2094505), (1225, 1649957), (1351, 1496075), (2075, 974071), (2575, 784931), (2905, 695765), (3605, 560665), (4067, 496975), (4825, 418901), (5047, 400475), (6755, 299215), (8549, 236425), (9457, 213725), (14525, 139153), (16019, 126175), (18025, 112133), (19879, 101675), (20335, 99395), (25235, 80095), (33775, 59843), (42745, 47285)]