21455700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{601}}^1$

素因数の和:642

約数の個数: 144

約数和(自身を含む): 75245184

約数和(自身を除く): 53789484

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 17, 20, 21, 25, 28, 30, 34, 35, 42, 50, 51, 60, 68, 70, 75, 84, 85, 100, 102, 105, 119, 140, 150, 170, 175, 204, 210, 238, 255, 300, 340, 350, 357, 420, 425, 476, 510, 525, 595, 601, 700, 714, 850, 1020, 1050, 1190, 1202, 1275, 1428, 1700, 1785, 1803, 2100, 2380, 2404, 2550, 2975, 3005, 3570, 3606, 4207, 5100, 5950, 6010, 7140, 7212, 8414, 8925, 9015, 10217, 11900, 12020, 12621, 15025, 16828, 17850, 18030, 20434, 21035, 25242, 30050, 30651, 35700, 36060, 40868, 42070, 45075, 50484, 51085, 60100, 61302, 63105, 71519, 84140, 90150, 102170, 105175, 122604, 126210, 143038, 153255, 180300, 204340, 210350, 214557, 252420, 255425, 286076, 306510, 315525, 357595, 420700, 429114, 510850, 613020, 631050, 715190, 766275, 858228, 1021700, 1072785, 1262100, 1430380, 1532550, 1787975, 2145570, 3065100, 3575950, 4291140, 5363925, 7151900, 10727850, 21455700]

約数ペア:

[(1, 21455700), (2, 10727850), (3, 7151900), (4, 5363925), (5, 4291140), (6, 3575950), (7, 3065100), (10, 2145570), (12, 1787975), (14, 1532550), (15, 1430380), (17, 1262100), (20, 1072785), (21, 1021700), (25, 858228), (28, 766275), (30, 715190), (34, 631050), (35, 613020), (42, 510850), (50, 429114), (51, 420700), (60, 357595), (68, 315525), (70, 306510), (75, 286076), (84, 255425), (85, 252420), (100, 214557), (102, 210350), (105, 204340), (119, 180300), (140, 153255), (150, 143038), (170, 126210), (175, 122604), (204, 105175), (210, 102170), (238, 90150), (255, 84140), (300, 71519), (340, 63105), (350, 61302), (357, 60100), (420, 51085), (425, 50484), (476, 45075), (510, 42070), (525, 40868), (595, 36060), (601, 35700), (700, 30651), (714, 30050), (850, 25242), (1020, 21035), (1050, 20434), (1190, 18030), (1202, 17850), (1275, 16828), (1428, 15025), (1700, 12621), (1785, 12020), (1803, 11900), (2100, 10217), (2380, 9015), (2404, 8925), (2550, 8414), (2975, 7212), (3005, 7140), (3570, 6010), (3606, 5950), (4207, 5100)]