161721420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{12421}}^1$

素因数の和:12471

約数の個数: 96

約数和(自身を含む): 534245376

約数和(自身を除く): 372523956

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 60, 62, 70, 84, 93, 105, 124, 140, 155, 186, 210, 217, 310, 372, 420, 434, 465, 620, 651, 868, 930, 1085, 1302, 1860, 2170, 2604, 3255, 4340, 6510, 12421, 13020, 24842, 37263, 49684, 62105, 74526, 86947, 124210, 149052, 173894, 186315, 248420, 260841, 347788, 372630, 385051, 434735, 521682, 745260, 770102, 869470, 1043364, 1155153, 1304205, 1540204, 1738940, 1925255, 2310306, 2608410, 2695357, 3850510, 4620612, 5216820, 5390714, 5775765, 7701020, 8086071, 10781428, 11551530, 13476785, 16172142, 23103060, 26953570, 32344284, 40430355, 53907140, 80860710, 161721420]

約数ペア:

[(1, 161721420), (2, 80860710), (3, 53907140), (4, 40430355), (5, 32344284), (6, 26953570), (7, 23103060), (10, 16172142), (12, 13476785), (14, 11551530), (15, 10781428), (20, 8086071), (21, 7701020), (28, 5775765), (30, 5390714), (31, 5216820), (35, 4620612), (42, 3850510), (60, 2695357), (62, 2608410), (70, 2310306), (84, 1925255), (93, 1738940), (105, 1540204), (124, 1304205), (140, 1155153), (155, 1043364), (186, 869470), (210, 770102), (217, 745260), (310, 521682), (372, 434735), (420, 385051), (434, 372630), (465, 347788), (620, 260841), (651, 248420), (868, 186315), (930, 173894), (1085, 149052), (1302, 124210), (1860, 86947), (2170, 74526), (2604, 62105), (3255, 49684), (4340, 37263), (6510, 24842), (12421, 13020)]