31720000

素因数分解:

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

素因数の和:106

約数の個数: 140

約数和(自身を含む): 86094316

約数和(自身を除く): 54374316

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 61, 64, 65, 80, 100, 104, 122, 125, 130, 160, 200, 208, 244, 250, 260, 305, 320, 325, 400, 416, 488, 500, 520, 610, 625, 650, 793, 800, 832, 976, 1000, 1040, 1220, 1250, 1300, 1525, 1586, 1600, 1625, 1952, 2000, 2080, 2440, 2500, 2600, 3050, 3172, 3250, 3904, 3965, 4000, 4160, 4880, 5000, 5200, 6100, 6344, 6500, 7625, 7930, 8000, 8125, 9760, 10000, 10400, 12200, 12688, 13000, 15250, 15860, 16250, 19520, 19825, 20000, 20800, 24400, 25376, 26000, 30500, 31720, 32500, 38125, 39650, 40000, 48800, 50752, 52000, 61000, 63440, 65000, 76250, 79300, 97600, 99125, 104000, 122000, 126880, 130000, 152500, 158600, 198250, 244000, 253760, 260000, 305000, 317200, 396500, 488000, 495625, 520000, 610000, 634400, 793000, 991250, 1220000, 1268800, 1586000, 1982500, 2440000, 3172000, 3965000, 6344000, 7930000, 15860000, 31720000]

約数ペア:

[(1, 31720000), (2, 15860000), (4, 7930000), (5, 6344000), (8, 3965000), (10, 3172000), (13, 2440000), (16, 1982500), (20, 1586000), (25, 1268800), (26, 1220000), (32, 991250), (40, 793000), (50, 634400), (52, 610000), (61, 520000), (64, 495625), (65, 488000), (80, 396500), (100, 317200), (104, 305000), (122, 260000), (125, 253760), (130, 244000), (160, 198250), (200, 158600), (208, 152500), (244, 130000), (250, 126880), (260, 122000), (305, 104000), (320, 99125), (325, 97600), (400, 79300), (416, 76250), (488, 65000), (500, 63440), (520, 61000), (610, 52000), (625, 50752), (650, 48800), (793, 40000), (800, 39650), (832, 38125), (976, 32500), (1000, 31720), (1040, 30500), (1220, 26000), (1250, 25376), (1300, 24400), (1525, 20800), (1586, 20000), (1600, 19825), (1625, 19520), (1952, 16250), (2000, 15860), (2080, 15250), (2440, 13000), (2500, 12688), (2600, 12200), (3050, 10400), (3172, 10000), (3250, 9760), (3904, 8125), (3965, 8000), (4000, 7930), (4160, 7625), (4880, 6500), (5000, 6344), (5200, 6100)]