21019140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6869}}^1$

素因数の和:6901

約数の個数: 72

約数和(自身を含む): 67518360

約数和(自身を除く): 46499220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6869, 13738, 20607, 27476, 34345, 41214, 61821, 68690, 82428, 103035, 116773, 123642, 137380, 206070, 233546, 247284, 309105, 350319, 412140, 467092, 583865, 618210, 700638, 1050957, 1167730, 1236420, 1401276, 1751595, 2101914, 2335460, 3503190, 4203828, 5254785, 7006380, 10509570, 21019140]

約数ペア:

[(1, 21019140), (2, 10509570), (3, 7006380), (4, 5254785), (5, 4203828), (6, 3503190), (9, 2335460), (10, 2101914), (12, 1751595), (15, 1401276), (17, 1236420), (18, 1167730), (20, 1050957), (30, 700638), (34, 618210), (36, 583865), (45, 467092), (51, 412140), (60, 350319), (68, 309105), (85, 247284), (90, 233546), (102, 206070), (153, 137380), (170, 123642), (180, 116773), (204, 103035), (255, 82428), (306, 68690), (340, 61821), (510, 41214), (612, 34345), (765, 27476), (1020, 20607), (1530, 13738), (3060, 6869)]