18818280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4021}}^1$

素因数の和:4051

約数の個数: 96

約数和(自身を含む): 65880360

約数和(自身を除く): 47062080

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 180, 195, 234, 260, 312, 360, 390, 468, 520, 585, 780, 936, 1170, 1560, 2340, 4021, 4680, 8042, 12063, 16084, 20105, 24126, 32168, 36189, 40210, 48252, 52273, 60315, 72378, 80420, 96504, 104546, 120630, 144756, 156819, 160840, 180945, 209092, 241260, 261365, 289512, 313638, 361890, 418184, 470457, 482520, 522730, 627276, 723780, 784095, 940914, 1045460, 1254552, 1447560, 1568190, 1881828, 2090920, 2352285, 3136380, 3763656, 4704570, 6272760, 9409140, 18818280]

約数ペア:

[(1, 18818280), (2, 9409140), (3, 6272760), (4, 4704570), (5, 3763656), (6, 3136380), (8, 2352285), (9, 2090920), (10, 1881828), (12, 1568190), (13, 1447560), (15, 1254552), (18, 1045460), (20, 940914), (24, 784095), (26, 723780), (30, 627276), (36, 522730), (39, 482520), (40, 470457), (45, 418184), (52, 361890), (60, 313638), (65, 289512), (72, 261365), (78, 241260), (90, 209092), (104, 180945), (117, 160840), (120, 156819), (130, 144756), (156, 120630), (180, 104546), (195, 96504), (234, 80420), (260, 72378), (312, 60315), (360, 52273), (390, 48252), (468, 40210), (520, 36189), (585, 32168), (780, 24126), (936, 20105), (1170, 16084), (1560, 12063), (2340, 8042), (4021, 4680)]