12154940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 30260160

約数和(自身を除く): 18105220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 79, 98, 140, 157, 158, 196, 245, 314, 316, 395, 490, 553, 628, 785, 790, 980, 1099, 1106, 1570, 1580, 2198, 2212, 2765, 3140, 3871, 4396, 5495, 5530, 7693, 7742, 10990, 11060, 12403, 15386, 15484, 19355, 21980, 24806, 30772, 38465, 38710, 49612, 62015, 76930, 77420, 86821, 124030, 153860, 173642, 248060, 347284, 434105, 607747, 868210, 1215494, 1736420, 2430988, 3038735, 6077470, 12154940]

約数ペア:

[(1, 12154940), (2, 6077470), (4, 3038735), (5, 2430988), (7, 1736420), (10, 1215494), (14, 868210), (20, 607747), (28, 434105), (35, 347284), (49, 248060), (70, 173642), (79, 153860), (98, 124030), (140, 86821), (157, 77420), (158, 76930), (196, 62015), (245, 49612), (314, 38710), (316, 38465), (395, 30772), (490, 24806), (553, 21980), (628, 19355), (785, 15484), (790, 15386), (980, 12403), (1099, 11060), (1106, 10990), (1570, 7742), (1580, 7693), (2198, 5530), (2212, 5495), (2765, 4396), (3140, 3871)]