20816250

素因数分解:

$2^1\times 3^1\times 5^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:106

約数の個数: 160

約数和(自身を含む): 65079168

約数和(自身を除く): 44262918

約数列:

[1, 2, 3, 5, 6, 7, 10, 13, 14, 15, 21, 25, 26, 30, 35, 39, 42, 50, 61, 65, 70, 75, 78, 91, 105, 122, 125, 130, 150, 175, 182, 183, 195, 210, 250, 273, 305, 325, 350, 366, 375, 390, 427, 455, 525, 546, 610, 625, 650, 750, 793, 854, 875, 910, 915, 975, 1050, 1250, 1281, 1365, 1525, 1586, 1625, 1750, 1830, 1875, 1950, 2135, 2275, 2379, 2562, 2625, 2730, 3050, 3250, 3750, 3965, 4270, 4375, 4550, 4575, 4758, 4875, 5250, 5551, 6405, 6825, 7625, 7930, 8125, 8750, 9150, 9750, 10675, 11102, 11375, 11895, 12810, 13125, 13650, 15250, 16250, 16653, 19825, 21350, 22750, 22875, 23790, 24375, 26250, 27755, 32025, 33306, 34125, 38125, 39650, 45750, 48750, 53375, 55510, 56875, 59475, 64050, 68250, 76250, 83265, 99125, 106750, 113750, 114375, 118950, 138775, 160125, 166530, 170625, 198250, 228750, 266875, 277550, 297375, 320250, 341250, 416325, 495625, 533750, 594750, 693875, 800625, 832650, 991250, 1387750, 1486875, 1601250, 2081625, 2973750, 3469375, 4163250, 6938750, 10408125, 20816250]

約数ペア:

[(1, 20816250), (2, 10408125), (3, 6938750), (5, 4163250), (6, 3469375), (7, 2973750), (10, 2081625), (13, 1601250), (14, 1486875), (15, 1387750), (21, 991250), (25, 832650), (26, 800625), (30, 693875), (35, 594750), (39, 533750), (42, 495625), (50, 416325), (61, 341250), (65, 320250), (70, 297375), (75, 277550), (78, 266875), (91, 228750), (105, 198250), (122, 170625), (125, 166530), (130, 160125), (150, 138775), (175, 118950), (182, 114375), (183, 113750), (195, 106750), (210, 99125), (250, 83265), (273, 76250), (305, 68250), (325, 64050), (350, 59475), (366, 56875), (375, 55510), (390, 53375), (427, 48750), (455, 45750), (525, 39650), (546, 38125), (610, 34125), (625, 33306), (650, 32025), (750, 27755), (793, 26250), (854, 24375), (875, 23790), (910, 22875), (915, 22750), (975, 21350), (1050, 19825), (1250, 16653), (1281, 16250), (1365, 15250), (1525, 13650), (1586, 13125), (1625, 12810), (1750, 11895), (1830, 11375), (1875, 11102), (1950, 10675), (2135, 9750), (2275, 9150), (2379, 8750), (2562, 8125), (2625, 7930), (2730, 7625), (3050, 6825), (3250, 6405), (3750, 5551), (3965, 5250), (4270, 4875), (4375, 4758), (4550, 4575)]