198250000

素因数分解:

$2^4\times 5^6\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:112

約数の個数: 140

約数和(自身を含む): 525540148

約数和(自身を除く): 327290148

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 61, 65, 80, 100, 104, 122, 125, 130, 200, 208, 244, 250, 260, 305, 325, 400, 488, 500, 520, 610, 625, 650, 793, 976, 1000, 1040, 1220, 1250, 1300, 1525, 1586, 1625, 2000, 2440, 2500, 2600, 3050, 3125, 3172, 3250, 3965, 4880, 5000, 5200, 6100, 6250, 6344, 6500, 7625, 7930, 8125, 10000, 12200, 12500, 12688, 13000, 15250, 15625, 15860, 16250, 19825, 24400, 25000, 26000, 30500, 31250, 31720, 32500, 38125, 39650, 40625, 50000, 61000, 62500, 63440, 65000, 76250, 79300, 81250, 99125, 122000, 125000, 130000, 152500, 158600, 162500, 190625, 198250, 203125, 250000, 305000, 317200, 325000, 381250, 396500, 406250, 495625, 610000, 650000, 762500, 793000, 812500, 953125, 991250, 1525000, 1586000, 1625000, 1906250, 1982500, 2478125, 3050000, 3250000, 3812500, 3965000, 4956250, 7625000, 7930000, 9912500, 12390625, 15250000, 19825000, 24781250, 39650000, 49562500, 99125000, 198250000]

約数ペア:

[(1, 198250000), (2, 99125000), (4, 49562500), (5, 39650000), (8, 24781250), (10, 19825000), (13, 15250000), (16, 12390625), (20, 9912500), (25, 7930000), (26, 7625000), (40, 4956250), (50, 3965000), (52, 3812500), (61, 3250000), (65, 3050000), (80, 2478125), (100, 1982500), (104, 1906250), (122, 1625000), (125, 1586000), (130, 1525000), (200, 991250), (208, 953125), (244, 812500), (250, 793000), (260, 762500), (305, 650000), (325, 610000), (400, 495625), (488, 406250), (500, 396500), (520, 381250), (610, 325000), (625, 317200), (650, 305000), (793, 250000), (976, 203125), (1000, 198250), (1040, 190625), (1220, 162500), (1250, 158600), (1300, 152500), (1525, 130000), (1586, 125000), (1625, 122000), (2000, 99125), (2440, 81250), (2500, 79300), (2600, 76250), (3050, 65000), (3125, 63440), (3172, 62500), (3250, 61000), (3965, 50000), (4880, 40625), (5000, 39650), (5200, 38125), (6100, 32500), (6250, 31720), (6344, 31250), (6500, 30500), (7625, 26000), (7930, 25000), (8125, 24400), (10000, 19825), (12200, 16250), (12500, 15860), (12688, 15625), (13000, 15250)]