81738540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2687}}^1$

素因数の和:2728

約数の個数: 108

約数和(自身を含む): 268579584

約数和(自身を除く): 186841044

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, 169, 180, 195, 234, 260, 338, 390, 468, 507, 585, 676, 780, 845, 1014, 1170, 1521, 1690, 2028, 2340, 2535, 2687, 3042, 3380, 5070, 5374, 6084, 7605, 8061, 10140, 10748, 13435, 15210, 16122, 24183, 26870, 30420, 32244, 34931, 40305, 48366, 53740, 69862, 80610, 96732, 104793, 120915, 139724, 161220, 174655, 209586, 241830, 314379, 349310, 419172, 454103, 483660, 523965, 628758, 698620, 908206, 1047930, 1257516, 1362309, 1571895, 1816412, 2095860, 2270515, 2724618, 3143790, 4086927, 4541030, 5449236, 6287580, 6811545, 8173854, 9082060, 13623090, 16347708, 20434635, 27246180, 40869270, 81738540]

約数ペア:

[(1, 81738540), (2, 40869270), (3, 27246180), (4, 20434635), (5, 16347708), (6, 13623090), (9, 9082060), (10, 8173854), (12, 6811545), (13, 6287580), (15, 5449236), (18, 4541030), (20, 4086927), (26, 3143790), (30, 2724618), (36, 2270515), (39, 2095860), (45, 1816412), (52, 1571895), (60, 1362309), (65, 1257516), (78, 1047930), (90, 908206), (117, 698620), (130, 628758), (156, 523965), (169, 483660), (180, 454103), (195, 419172), (234, 349310), (260, 314379), (338, 241830), (390, 209586), (468, 174655), (507, 161220), (585, 139724), (676, 120915), (780, 104793), (845, 96732), (1014, 80610), (1170, 69862), (1521, 53740), (1690, 48366), (2028, 40305), (2340, 34931), (2535, 32244), (2687, 30420), (3042, 26870), (3380, 24183), (5070, 16122), (5374, 15210), (6084, 13435), (7605, 10748), (8061, 10140)]