20897250

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1$

素因数の和:197

約数の個数: 128

約数和(自身を含む): 60652800

約数和(自身を除く): 39755550

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 17, 22, 25, 30, 33, 34, 50, 51, 55, 66, 75, 85, 102, 110, 125, 149, 150, 165, 170, 187, 250, 255, 275, 298, 330, 374, 375, 425, 447, 510, 550, 561, 745, 750, 825, 850, 894, 935, 1122, 1275, 1375, 1490, 1639, 1650, 1870, 2125, 2235, 2533, 2550, 2750, 2805, 3278, 3725, 4125, 4250, 4470, 4675, 4917, 5066, 5610, 6375, 7450, 7599, 8195, 8250, 9350, 9834, 11175, 12665, 12750, 14025, 15198, 16390, 18625, 22350, 23375, 24585, 25330, 27863, 28050, 37250, 37995, 40975, 46750, 49170, 55726, 55875, 63325, 70125, 75990, 81950, 83589, 111750, 122925, 126650, 139315, 140250, 167178, 189975, 204875, 245850, 278630, 316625, 379950, 409750, 417945, 614625, 633250, 696575, 835890, 949875, 1229250, 1393150, 1899750, 2089725, 3482875, 4179450, 6965750, 10448625, 20897250]

約数ペア:

[(1, 20897250), (2, 10448625), (3, 6965750), (5, 4179450), (6, 3482875), (10, 2089725), (11, 1899750), (15, 1393150), (17, 1229250), (22, 949875), (25, 835890), (30, 696575), (33, 633250), (34, 614625), (50, 417945), (51, 409750), (55, 379950), (66, 316625), (75, 278630), (85, 245850), (102, 204875), (110, 189975), (125, 167178), (149, 140250), (150, 139315), (165, 126650), (170, 122925), (187, 111750), (250, 83589), (255, 81950), (275, 75990), (298, 70125), (330, 63325), (374, 55875), (375, 55726), (425, 49170), (447, 46750), (510, 40975), (550, 37995), (561, 37250), (745, 28050), (750, 27863), (825, 25330), (850, 24585), (894, 23375), (935, 22350), (1122, 18625), (1275, 16390), (1375, 15198), (1490, 14025), (1639, 12750), (1650, 12665), (1870, 11175), (2125, 9834), (2235, 9350), (2533, 8250), (2550, 8195), (2750, 7599), (2805, 7450), (3278, 6375), (3725, 5610), (4125, 5066), (4250, 4917), (4470, 4675)]