21253950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{73}}^1\times {\mathrm{647}}^1$

素因数の和:738

約数の個数: 72

約数和(自身を含む): 57973968

約数和(自身を除く): 36720018

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 73, 75, 90, 146, 150, 219, 225, 365, 438, 450, 647, 657, 730, 1095, 1294, 1314, 1825, 1941, 2190, 3235, 3285, 3650, 3882, 5475, 5823, 6470, 6570, 9705, 10950, 11646, 16175, 16425, 19410, 29115, 32350, 32850, 47231, 48525, 58230, 94462, 97050, 141693, 145575, 236155, 283386, 291150, 425079, 472310, 708465, 850158, 1180775, 1416930, 2125395, 2361550, 3542325, 4250790, 7084650, 10626975, 21253950]

約数ペア:

[(1, 21253950), (2, 10626975), (3, 7084650), (5, 4250790), (6, 3542325), (9, 2361550), (10, 2125395), (15, 1416930), (18, 1180775), (25, 850158), (30, 708465), (45, 472310), (50, 425079), (73, 291150), (75, 283386), (90, 236155), (146, 145575), (150, 141693), (219, 97050), (225, 94462), (365, 58230), (438, 48525), (450, 47231), (647, 32850), (657, 32350), (730, 29115), (1095, 19410), (1294, 16425), (1314, 16175), (1825, 11646), (1941, 10950), (2190, 9705), (3235, 6570), (3285, 6470), (3650, 5823), (3882, 5475)]