20845800

素因数分解:

$2^3\times 3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{313}}^1$

素因数の和:372

約数の個数: 144

約数和(自身を含む): 72128940

約数和(自身を除く): 51283140

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 37, 40, 45, 50, 60, 72, 74, 75, 90, 100, 111, 120, 148, 150, 180, 185, 200, 222, 225, 296, 300, 313, 333, 360, 370, 444, 450, 555, 600, 626, 666, 740, 888, 900, 925, 939, 1110, 1252, 1332, 1480, 1565, 1665, 1800, 1850, 1878, 2220, 2504, 2664, 2775, 2817, 3130, 3330, 3700, 3756, 4440, 4695, 5550, 5634, 6260, 6660, 7400, 7512, 7825, 8325, 9390, 11100, 11268, 11581, 12520, 13320, 14085, 15650, 16650, 18780, 22200, 22536, 23162, 23475, 28170, 31300, 33300, 34743, 37560, 46324, 46950, 56340, 57905, 62600, 66600, 69486, 70425, 92648, 93900, 104229, 112680, 115810, 138972, 140850, 173715, 187800, 208458, 231620, 277944, 281700, 289525, 347430, 416916, 463240, 521145, 563400, 579050, 694860, 833832, 868575, 1042290, 1158100, 1389720, 1737150, 2084580, 2316200, 2605725, 3474300, 4169160, 5211450, 6948600, 10422900, 20845800]

約数ペア:

[(1, 20845800), (2, 10422900), (3, 6948600), (4, 5211450), (5, 4169160), (6, 3474300), (8, 2605725), (9, 2316200), (10, 2084580), (12, 1737150), (15, 1389720), (18, 1158100), (20, 1042290), (24, 868575), (25, 833832), (30, 694860), (36, 579050), (37, 563400), (40, 521145), (45, 463240), (50, 416916), (60, 347430), (72, 289525), (74, 281700), (75, 277944), (90, 231620), (100, 208458), (111, 187800), (120, 173715), (148, 140850), (150, 138972), (180, 115810), (185, 112680), (200, 104229), (222, 93900), (225, 92648), (296, 70425), (300, 69486), (313, 66600), (333, 62600), (360, 57905), (370, 56340), (444, 46950), (450, 46324), (555, 37560), (600, 34743), (626, 33300), (666, 31300), (740, 28170), (888, 23475), (900, 23162), (925, 22536), (939, 22200), (1110, 18780), (1252, 16650), (1332, 15650), (1480, 14085), (1565, 13320), (1665, 12520), (1800, 11581), (1850, 11268), (1878, 11100), (2220, 9390), (2504, 8325), (2664, 7825), (2775, 7512), (2817, 7400), (3130, 6660), (3330, 6260), (3700, 5634), (3756, 5550), (4440, 4695)]