401025625

素因数分解:

$5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:692

約数の個数: 80

約数和(自身を含む): 673884288

約数和(自身を除く): 272858663

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 125, 143, 175, 275, 325, 385, 455, 625, 641, 715, 875, 1001, 1375, 1625, 1925, 2275, 3205, 3575, 4375, 4487, 5005, 6875, 7051, 8125, 8333, 9625, 11375, 16025, 17875, 22435, 25025, 35255, 41665, 48125, 49357, 56875, 58331, 80125, 89375, 91663, 112175, 125125, 176275, 208325, 246785, 291655, 400625, 458315, 560875, 625625, 641641, 881375, 1041625, 1233925, 1458275, 2291575, 2804375, 3208205, 4406875, 5208125, 6169625, 7291375, 11457875, 16041025, 30848125, 36456875, 57289375, 80205125, 401025625]

約数ペア:

[(1, 401025625), (5, 80205125), (7, 57289375), (11, 36456875), (13, 30848125), (25, 16041025), (35, 11457875), (55, 7291375), (65, 6169625), (77, 5208125), (91, 4406875), (125, 3208205), (143, 2804375), (175, 2291575), (275, 1458275), (325, 1233925), (385, 1041625), (455, 881375), (625, 641641), (641, 625625), (715, 560875), (875, 458315), (1001, 400625), (1375, 291655), (1625, 246785), (1925, 208325), (2275, 176275), (3205, 125125), (3575, 112175), (4375, 91663), (4487, 89375), (5005, 80125), (6875, 58331), (7051, 56875), (8125, 49357), (8333, 48125), (9625, 41665), (11375, 35255), (16025, 25025), (17875, 22435)]