655620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{223}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 2145024

約数和(自身を除く): 1489404

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, 223, 245, 294, 420, 446, 490, 588, 669, 735, 892, 980, 1115, 1338, 1470, 1561, 2230, 2676, 2940, 3122, 3345, 4460, 4683, 6244, 6690, 7805, 9366, 10927, 13380, 15610, 18732, 21854, 23415, 31220, 32781, 43708, 46830, 54635, 65562, 93660, 109270, 131124, 163905, 218540, 327810, 655620]

約数ペア:

[(1, 655620), (2, 327810), (3, 218540), (4, 163905), (5, 131124), (6, 109270), (7, 93660), (10, 65562), (12, 54635), (14, 46830), (15, 43708), (20, 32781), (21, 31220), (28, 23415), (30, 21854), (35, 18732), (42, 15610), (49, 13380), (60, 10927), (70, 9366), (84, 7805), (98, 6690), (105, 6244), (140, 4683), (147, 4460), (196, 3345), (210, 3122), (223, 2940), (245, 2676), (294, 2230), (420, 1561), (446, 1470), (490, 1338), (588, 1115), (669, 980), (735, 892)]