19825000

素因数分解:

$2^3\times 5^5\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:105

約数の個数: 96

約数和(自身を含む): 50856120

約数和(自身を除く): 31031120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 61, 65, 100, 104, 122, 125, 130, 200, 244, 250, 260, 305, 325, 488, 500, 520, 610, 625, 650, 793, 1000, 1220, 1250, 1300, 1525, 1586, 1625, 2440, 2500, 2600, 3050, 3125, 3172, 3250, 3965, 5000, 6100, 6250, 6344, 6500, 7625, 7930, 8125, 12200, 12500, 13000, 15250, 15860, 16250, 19825, 25000, 30500, 31720, 32500, 38125, 39650, 40625, 61000, 65000, 76250, 79300, 81250, 99125, 152500, 158600, 162500, 190625, 198250, 305000, 325000, 381250, 396500, 495625, 762500, 793000, 991250, 1525000, 1982500, 2478125, 3965000, 4956250, 9912500, 19825000]

約数ペア:

[(1, 19825000), (2, 9912500), (4, 4956250), (5, 3965000), (8, 2478125), (10, 1982500), (13, 1525000), (20, 991250), (25, 793000), (26, 762500), (40, 495625), (50, 396500), (52, 381250), (61, 325000), (65, 305000), (100, 198250), (104, 190625), (122, 162500), (125, 158600), (130, 152500), (200, 99125), (244, 81250), (250, 79300), (260, 76250), (305, 65000), (325, 61000), (488, 40625), (500, 39650), (520, 38125), (610, 32500), (625, 31720), (650, 30500), (793, 25000), (1000, 19825), (1220, 16250), (1250, 15860), (1300, 15250), (1525, 13000), (1586, 12500), (1625, 12200), (2440, 8125), (2500, 7930), (2600, 7625), (3050, 6500), (3125, 6344), (3172, 6250), (3250, 6100), (3965, 5000)]