81306800

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:211

約数の個数: 120

約数和(自身を含む): 206653440

約数和(自身を除く): 125346640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 79, 80, 83, 100, 124, 155, 158, 166, 200, 248, 310, 316, 332, 395, 400, 415, 496, 620, 632, 664, 775, 790, 830, 1240, 1264, 1328, 1550, 1580, 1660, 1975, 2075, 2449, 2480, 2573, 3100, 3160, 3320, 3950, 4150, 4898, 5146, 6200, 6320, 6557, 6640, 7900, 8300, 9796, 10292, 12245, 12400, 12865, 13114, 15800, 16600, 19592, 20584, 24490, 25730, 26228, 31600, 32785, 33200, 39184, 41168, 48980, 51460, 52456, 61225, 64325, 65570, 97960, 102920, 104912, 122450, 128650, 131140, 163925, 195920, 203267, 205840, 244900, 257300, 262280, 327850, 406534, 489800, 514600, 524560, 655700, 813068, 979600, 1016335, 1029200, 1311400, 1626136, 2032670, 2622800, 3252272, 4065340, 5081675, 8130680, 10163350, 16261360, 20326700, 40653400, 81306800]

約数ペア:

[(1, 81306800), (2, 40653400), (4, 20326700), (5, 16261360), (8, 10163350), (10, 8130680), (16, 5081675), (20, 4065340), (25, 3252272), (31, 2622800), (40, 2032670), (50, 1626136), (62, 1311400), (79, 1029200), (80, 1016335), (83, 979600), (100, 813068), (124, 655700), (155, 524560), (158, 514600), (166, 489800), (200, 406534), (248, 327850), (310, 262280), (316, 257300), (332, 244900), (395, 205840), (400, 203267), (415, 195920), (496, 163925), (620, 131140), (632, 128650), (664, 122450), (775, 104912), (790, 102920), (830, 97960), (1240, 65570), (1264, 64325), (1328, 61225), (1550, 52456), (1580, 51460), (1660, 48980), (1975, 41168), (2075, 39184), (2449, 33200), (2480, 32785), (2573, 31600), (3100, 26228), (3160, 25730), (3320, 24490), (3950, 20584), (4150, 19592), (4898, 16600), (5146, 15800), (6200, 13114), (6320, 12865), (6557, 12400), (6640, 12245), (7900, 10292), (8300, 9796)]