19681740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{647}}^1$

素因数の和:688

約数の個数: 108

約数和(自身を含む): 64746864

約数和(自身を除く): 45065124

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, 647, 676, 780, 845, 1014, 1170, 1294, 1521, 1690, 1941, 2028, 2340, 2535, 2588, 3042, 3235, 3380, 3882, 5070, 5823, 6084, 6470, 7605, 7764, 8411, 9705, 10140, 11646, 12940, 15210, 16822, 19410, 23292, 25233, 29115, 30420, 33644, 38820, 42055, 50466, 58230, 75699, 84110, 100932, 109343, 116460, 126165, 151398, 168220, 218686, 252330, 302796, 328029, 378495, 437372, 504660, 546715, 656058, 756990, 984087, 1093430, 1312116, 1513980, 1640145, 1968174, 2186860, 3280290, 3936348, 4920435, 6560580, 9840870, 19681740]

約数ペア:

[(1, 19681740), (2, 9840870), (3, 6560580), (4, 4920435), (5, 3936348), (6, 3280290), (9, 2186860), (10, 1968174), (12, 1640145), (13, 1513980), (15, 1312116), (18, 1093430), (20, 984087), (26, 756990), (30, 656058), (36, 546715), (39, 504660), (45, 437372), (52, 378495), (60, 328029), (65, 302796), (78, 252330), (90, 218686), (117, 168220), (130, 151398), (156, 126165), (169, 116460), (180, 109343), (195, 100932), (234, 84110), (260, 75699), (338, 58230), (390, 50466), (468, 42055), (507, 38820), (585, 33644), (647, 30420), (676, 29115), (780, 25233), (845, 23292), (1014, 19410), (1170, 16822), (1294, 15210), (1521, 12940), (1690, 11646), (1941, 10140), (2028, 9705), (2340, 8411), (2535, 7764), (2588, 7605), (3042, 6470), (3235, 6084), (3380, 5823), (3882, 5070)]