398809775

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{317}}^1$

素因数の和:433

約数の個数: 72

約数和(自身を含む): 629334720

約数和(自身を除く): 230524945

約数列:

[1, 5, 7, 13, 25, 35, 49, 65, 79, 91, 175, 245, 317, 325, 395, 455, 553, 637, 1027, 1225, 1585, 1975, 2219, 2275, 2765, 3185, 3871, 4121, 5135, 7189, 7925, 11095, 13825, 15533, 15925, 19355, 20605, 25043, 25675, 28847, 35945, 50323, 55475, 77665, 96775, 103025, 125215, 144235, 175301, 179725, 201929, 251615, 325559, 388325, 626075, 721175, 876505, 1009645, 1227107, 1258075, 1627795, 2278913, 4382525, 5048225, 6135535, 8138975, 11394565, 15952391, 30677675, 56972825, 79761955, 398809775]

約数ペア:

[(1, 398809775), (5, 79761955), (7, 56972825), (13, 30677675), (25, 15952391), (35, 11394565), (49, 8138975), (65, 6135535), (79, 5048225), (91, 4382525), (175, 2278913), (245, 1627795), (317, 1258075), (325, 1227107), (395, 1009645), (455, 876505), (553, 721175), (637, 626075), (1027, 388325), (1225, 325559), (1585, 251615), (1975, 201929), (2219, 179725), (2275, 175301), (2765, 144235), (3185, 125215), (3871, 103025), (4121, 96775), (5135, 77665), (7189, 55475), (7925, 50323), (11095, 35945), (13825, 28847), (15533, 25675), (15925, 25043), (19355, 20605)]