81234585.000000000

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{38971}}^1$

素因数の和:38997

約数の個数: 72

約数和(自身を含む): 373195872

約数和(自身を除く): 258621132

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 38971, 77942, 116913, 155884, 194855, 233826, 272797, 389710, 467652, 545594, 584565, 779420, 818391, 1091188, 1169130, 1363985, 1636782, 1909579, 2338260, 2727970, 3273564, 3819158, 4091955, 5455940, 5728737, 7638316, 8183910, 9547895, 11457474, 16367820, 19095790, 22914948, 28643685, 38191580, 57287370, 114574740]

約数ペア:

[(1, 114574740), (2, 57287370), (3, 38191580), (4, 28643685), (5, 22914948), (6, 19095790), (7, 16367820), (10, 11457474), (12, 9547895), (14, 8183910), (15, 7638316), (20, 5728737), (21, 5455940), (28, 4091955), (30, 3819158), (35, 3273564), (42, 2727970), (49, 2338260), (60, 1909579), (70, 1636782), (84, 1363985), (98, 1169130), (105, 1091188), (140, 818391), (147, 779420), (196, 584565), (210, 545594), (245, 467652), (294, 389710), (420, 272797), (490, 233826), (588, 194855), (735, 155884), (980, 116913), (1470, 77942), (2940, 38971)]