21130380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1319}}^1$

素因数の和:1423

約数の個数: 72

約数和(自身を含む): 64864800

約数和(自身を除く): 43734420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 89, 90, 178, 180, 267, 356, 445, 534, 801, 890, 1068, 1319, 1335, 1602, 1780, 2638, 2670, 3204, 3957, 4005, 5276, 5340, 6595, 7914, 8010, 11871, 13190, 15828, 16020, 19785, 23742, 26380, 39570, 47484, 59355, 79140, 117391, 118710, 234782, 237420, 352173, 469564, 586955, 704346, 1056519, 1173910, 1408692, 1760865, 2113038, 2347820, 3521730, 4226076, 5282595, 7043460, 10565190, 21130380]

約数ペア:

[(1, 21130380), (2, 10565190), (3, 7043460), (4, 5282595), (5, 4226076), (6, 3521730), (9, 2347820), (10, 2113038), (12, 1760865), (15, 1408692), (18, 1173910), (20, 1056519), (30, 704346), (36, 586955), (45, 469564), (60, 352173), (89, 237420), (90, 234782), (178, 118710), (180, 117391), (267, 79140), (356, 59355), (445, 47484), (534, 39570), (801, 26380), (890, 23742), (1068, 19785), (1319, 16020), (1335, 15828), (1602, 13190), (1780, 11871), (2638, 8010), (2670, 7914), (3204, 6595), (3957, 5340), (4005, 5276)]