81621420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{80021}}^1$

素因数の和:80050

約数の個数: 48

約数和(自身を含む): 241986528

約数和(自身を除く): 160365108

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 80021, 160042, 240063, 320084, 400105, 480126, 800210, 960252, 1200315, 1360357, 1600420, 2400630, 2720714, 4081071, 4801260, 5441428, 6801785, 8162142, 13603570, 16324284, 20405355, 27207140, 40810710, 81621420]

約数ペア:

[(1, 81621420), (2, 40810710), (3, 27207140), (4, 20405355), (5, 16324284), (6, 13603570), (10, 8162142), (12, 6801785), (15, 5441428), (17, 4801260), (20, 4081071), (30, 2720714), (34, 2400630), (51, 1600420), (60, 1360357), (68, 1200315), (85, 960252), (102, 800210), (170, 480126), (204, 400105), (255, 320084), (340, 240063), (510, 160042), (1020, 80021)]