221299390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:757

約数の個数: 64

約数和(自身を含む): 448519680

約数和(自身を除く): 227220290

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 89, 130, 155, 178, 310, 403, 445, 617, 806, 890, 1157, 1234, 2015, 2314, 2759, 3085, 4030, 5518, 5785, 6170, 8021, 11570, 13795, 16042, 19127, 27590, 35867, 38254, 40105, 54913, 71734, 80210, 95635, 109826, 179335, 191270, 248651, 274565, 358670, 497302, 549130, 713869, 1243255, 1427738, 1702303, 2486510, 3404606, 3569345, 7138690, 8511515, 17023030, 22129939, 44259878, 110649695, 221299390]

約数ペア:

[(1, 221299390), (2, 110649695), (5, 44259878), (10, 22129939), (13, 17023030), (26, 8511515), (31, 7138690), (62, 3569345), (65, 3404606), (89, 2486510), (130, 1702303), (155, 1427738), (178, 1243255), (310, 713869), (403, 549130), (445, 497302), (617, 358670), (806, 274565), (890, 248651), (1157, 191270), (1234, 179335), (2015, 109826), (2314, 95635), (2759, 80210), (3085, 71734), (4030, 54913), (5518, 40105), (5785, 38254), (6170, 35867), (8021, 27590), (11570, 19127), (13795, 16042)]