81430020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64627}}^1$

素因数の和:64649

約数の個数: 72

約数和(自身を含む): 282295104

約数和(自身を除く): 200865084

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64627, 129254, 193881, 258508, 323135, 387762, 452389, 581643, 646270, 775524, 904778, 969405, 1163286, 1292540, 1357167, 1809556, 1938810, 2261945, 2326572, 2714334, 2908215, 3877620, 4071501, 4523890, 5428668, 5816430, 6785835, 8143002, 9047780, 11632860, 13571670, 16286004, 20357505, 27143340, 40715010, 81430020]

約数ペア:

[(1, 81430020), (2, 40715010), (3, 27143340), (4, 20357505), (5, 16286004), (6, 13571670), (7, 11632860), (9, 9047780), (10, 8143002), (12, 6785835), (14, 5816430), (15, 5428668), (18, 4523890), (20, 4071501), (21, 3877620), (28, 2908215), (30, 2714334), (35, 2326572), (36, 2261945), (42, 1938810), (45, 1809556), (60, 1357167), (63, 1292540), (70, 1163286), (84, 969405), (90, 904778), (105, 775524), (126, 646270), (140, 581643), (180, 452389), (210, 387762), (252, 323135), (315, 258508), (420, 193881), (630, 129254), (1260, 64627)]