218619440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6781}}^1$

素因数の和:6838

約数の個数: 80

約数和(自身を含む): 565130496

約数和(自身を除く): 346511056

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 40, 52, 62, 65, 80, 104, 124, 130, 155, 208, 248, 260, 310, 403, 496, 520, 620, 806, 1040, 1240, 1612, 2015, 2480, 3224, 4030, 6448, 6781, 8060, 13562, 16120, 27124, 32240, 33905, 54248, 67810, 88153, 108496, 135620, 176306, 210211, 271240, 352612, 420422, 440765, 542480, 705224, 840844, 881530, 1051055, 1410448, 1681688, 1763060, 2102110, 2732743, 3363376, 3526120, 4204220, 5465486, 7052240, 8408440, 10930972, 13663715, 16816880, 21861944, 27327430, 43723888, 54654860, 109309720, 218619440]

約数ペア:

[(1, 218619440), (2, 109309720), (4, 54654860), (5, 43723888), (8, 27327430), (10, 21861944), (13, 16816880), (16, 13663715), (20, 10930972), (26, 8408440), (31, 7052240), (40, 5465486), (52, 4204220), (62, 3526120), (65, 3363376), (80, 2732743), (104, 2102110), (124, 1763060), (130, 1681688), (155, 1410448), (208, 1051055), (248, 881530), (260, 840844), (310, 705224), (403, 542480), (496, 440765), (520, 420422), (620, 352612), (806, 271240), (1040, 210211), (1240, 176306), (1612, 135620), (2015, 108496), (2480, 88153), (3224, 67810), (4030, 54248), (6448, 33905), (6781, 32240), (8060, 27124), (13562, 16120)]