3965000

素因数分解:

$2^3\times 5^4\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:100

約数の個数: 80

約数和(自身を含む): 10168620

約数和(自身を除く): 6203620

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, 3172, 3250, 3965, 5000, 6100, 6344, 6500, 7625, 7930, 8125, 12200, 13000, 15250, 15860, 16250, 19825, 30500, 31720, 32500, 38125, 39650, 61000, 65000, 76250, 79300, 99125, 152500, 158600, 198250, 305000, 396500, 495625, 793000, 991250, 1982500, 3965000]

約数ペア:

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