21709680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{313}}^1$

素因数の和:363

約数の個数: 120

約数和(自身を含む): 71720112

約数和(自身を除く): 50010432

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, 289, 313, 340, 408, 510, 578, 626, 680, 816, 867, 939, 1020, 1156, 1252, 1360, 1445, 1565, 1734, 1878, 2040, 2312, 2504, 2890, 3130, 3468, 3756, 4080, 4335, 4624, 4695, 5008, 5321, 5780, 6260, 6936, 7512, 8670, 9390, 10642, 11560, 12520, 13872, 15024, 15963, 17340, 18780, 21284, 23120, 25040, 26605, 31926, 34680, 37560, 42568, 53210, 63852, 69360, 75120, 79815, 85136, 90457, 106420, 127704, 159630, 180914, 212840, 255408, 271371, 319260, 361828, 425680, 452285, 542742, 638520, 723656, 904570, 1085484, 1277040, 1356855, 1447312, 1809140, 2170968, 2713710, 3618280, 4341936, 5427420, 7236560, 10854840, 21709680]

約数ペア:

[(1, 21709680), (2, 10854840), (3, 7236560), (4, 5427420), (5, 4341936), (6, 3618280), (8, 2713710), (10, 2170968), (12, 1809140), (15, 1447312), (16, 1356855), (17, 1277040), (20, 1085484), (24, 904570), (30, 723656), (34, 638520), (40, 542742), (48, 452285), (51, 425680), (60, 361828), (68, 319260), (80, 271371), (85, 255408), (102, 212840), (120, 180914), (136, 159630), (170, 127704), (204, 106420), (240, 90457), (255, 85136), (272, 79815), (289, 75120), (313, 69360), (340, 63852), (408, 53210), (510, 42568), (578, 37560), (626, 34680), (680, 31926), (816, 26605), (867, 25040), (939, 23120), (1020, 21284), (1156, 18780), (1252, 17340), (1360, 15963), (1445, 15024), (1565, 13872), (1734, 12520), (1878, 11560), (2040, 10642), (2312, 9390), (2504, 8670), (2890, 7512), (3130, 6936), (3468, 6260), (3756, 5780), (4080, 5321), (4335, 5008), (4624, 4695)]