28571820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{353}}^1$

素因数の和:455

約数の個数: 96

約数和(自身を含む): 85639680

約数和(自身を除く): 57067860

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 71, 76, 95, 114, 142, 190, 213, 228, 284, 285, 353, 355, 380, 426, 570, 706, 710, 852, 1059, 1065, 1140, 1349, 1412, 1420, 1765, 2118, 2130, 2698, 3530, 4047, 4236, 4260, 5295, 5396, 6707, 6745, 7060, 8094, 10590, 13414, 13490, 16188, 20121, 20235, 21180, 25063, 26828, 26980, 33535, 40242, 40470, 50126, 67070, 75189, 80484, 80940, 100252, 100605, 125315, 134140, 150378, 201210, 250630, 300756, 375945, 402420, 476197, 501260, 751890, 952394, 1428591, 1503780, 1904788, 2380985, 2857182, 4761970, 5714364, 7142955, 9523940, 14285910, 28571820]

約数ペア:

[(1, 28571820), (2, 14285910), (3, 9523940), (4, 7142955), (5, 5714364), (6, 4761970), (10, 2857182), (12, 2380985), (15, 1904788), (19, 1503780), (20, 1428591), (30, 952394), (38, 751890), (57, 501260), (60, 476197), (71, 402420), (76, 375945), (95, 300756), (114, 250630), (142, 201210), (190, 150378), (213, 134140), (228, 125315), (284, 100605), (285, 100252), (353, 80940), (355, 80484), (380, 75189), (426, 67070), (570, 50126), (706, 40470), (710, 40242), (852, 33535), (1059, 26980), (1065, 26828), (1140, 25063), (1349, 21180), (1412, 20235), (1420, 20121), (1765, 16188), (2118, 13490), (2130, 13414), (2698, 10590), (3530, 8094), (4047, 7060), (4236, 6745), (4260, 6707), (5295, 5396)]