21717840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5323}}^1$

素因数の和:5356

約数の個数: 80

約数和(自身を含む): 71299008

約数和(自身を除く): 49581168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5323, 10646, 15969, 21292, 26615, 31938, 42584, 53230, 63876, 79845, 85168, 90491, 106460, 127752, 159690, 180982, 212920, 255504, 271473, 319380, 361964, 425840, 452455, 542946, 638760, 723928, 904910, 1085892, 1277520, 1357365, 1447856, 1809820, 2171784, 2714730, 3619640, 4343568, 5429460, 7239280, 10858920, 21717840]

約数ペア:

[(1, 21717840), (2, 10858920), (3, 7239280), (4, 5429460), (5, 4343568), (6, 3619640), (8, 2714730), (10, 2171784), (12, 1809820), (15, 1447856), (16, 1357365), (17, 1277520), (20, 1085892), (24, 904910), (30, 723928), (34, 638760), (40, 542946), (48, 452455), (51, 425840), (60, 361964), (68, 319380), (80, 271473), (85, 255504), (102, 212920), (120, 180982), (136, 159690), (170, 127752), (204, 106460), (240, 90491), (255, 85168), (272, 79845), (340, 63876), (408, 53230), (510, 42584), (680, 31938), (816, 26615), (1020, 21292), (1360, 15969), (2040, 10646), (4080, 5323)]