19762500

素因数分解:

$2^2\times 3^1\times 5^5\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:80

約数の個数: 144

約数和(自身を含む): 62995968

約数和(自身を除く): 43233468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 25, 30, 31, 34, 50, 51, 60, 62, 68, 75, 85, 93, 100, 102, 124, 125, 150, 155, 170, 186, 204, 250, 255, 300, 310, 340, 372, 375, 425, 465, 500, 510, 527, 620, 625, 750, 775, 850, 930, 1020, 1054, 1250, 1275, 1500, 1550, 1581, 1700, 1860, 1875, 2108, 2125, 2325, 2500, 2550, 2635, 3100, 3125, 3162, 3750, 3875, 4250, 4650, 5100, 5270, 6250, 6324, 6375, 7500, 7750, 7905, 8500, 9300, 9375, 10540, 10625, 11625, 12500, 12750, 13175, 15500, 15810, 18750, 19375, 21250, 23250, 25500, 26350, 31620, 31875, 37500, 38750, 39525, 42500, 46500, 52700, 53125, 58125, 63750, 65875, 77500, 79050, 96875, 106250, 116250, 127500, 131750, 158100, 159375, 193750, 197625, 212500, 232500, 263500, 290625, 318750, 329375, 387500, 395250, 581250, 637500, 658750, 790500, 988125, 1162500, 1317500, 1646875, 1976250, 3293750, 3952500, 4940625, 6587500, 9881250, 19762500]

約数ペア:

[(1, 19762500), (2, 9881250), (3, 6587500), (4, 4940625), (5, 3952500), (6, 3293750), (10, 1976250), (12, 1646875), (15, 1317500), (17, 1162500), (20, 988125), (25, 790500), (30, 658750), (31, 637500), (34, 581250), (50, 395250), (51, 387500), (60, 329375), (62, 318750), (68, 290625), (75, 263500), (85, 232500), (93, 212500), (100, 197625), (102, 193750), (124, 159375), (125, 158100), (150, 131750), (155, 127500), (170, 116250), (186, 106250), (204, 96875), (250, 79050), (255, 77500), (300, 65875), (310, 63750), (340, 58125), (372, 53125), (375, 52700), (425, 46500), (465, 42500), (500, 39525), (510, 38750), (527, 37500), (620, 31875), (625, 31620), (750, 26350), (775, 25500), (850, 23250), (930, 21250), (1020, 19375), (1054, 18750), (1250, 15810), (1275, 15500), (1500, 13175), (1550, 12750), (1581, 12500), (1700, 11625), (1860, 10625), (1875, 10540), (2108, 9375), (2125, 9300), (2325, 8500), (2500, 7905), (2550, 7750), (2635, 7500), (3100, 6375), (3125, 6324), (3162, 6250), (3750, 5270), (3875, 5100), (4250, 4650)]