31311540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13381}}^1$

素因数の和:13409

約数の個数: 72

約数和(自身を含む): 102292008

約数和(自身を除く): 70980468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 13381, 26762, 40143, 53524, 66905, 80286, 120429, 133810, 160572, 173953, 200715, 240858, 267620, 347906, 401430, 481716, 521859, 602145, 695812, 802860, 869765, 1043718, 1204290, 1565577, 1739530, 2087436, 2408580, 2609295, 3131154, 3479060, 5218590, 6262308, 7827885, 10437180, 15655770, 31311540]

約数ペア:

[(1, 31311540), (2, 15655770), (3, 10437180), (4, 7827885), (5, 6262308), (6, 5218590), (9, 3479060), (10, 3131154), (12, 2609295), (13, 2408580), (15, 2087436), (18, 1739530), (20, 1565577), (26, 1204290), (30, 1043718), (36, 869765), (39, 802860), (45, 695812), (52, 602145), (60, 521859), (65, 481716), (78, 401430), (90, 347906), (117, 267620), (130, 240858), (156, 200715), (180, 173953), (195, 160572), (234, 133810), (260, 120429), (390, 80286), (468, 66905), (585, 53524), (780, 40143), (1170, 26762), (2340, 13381)]