28554100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:257

約数の個数: 72

約数和(自身を含む): 65440256

約数和(自身を除く): 36886156

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 61, 62, 100, 122, 124, 151, 155, 244, 302, 305, 310, 604, 610, 620, 755, 775, 1220, 1510, 1525, 1550, 1891, 3020, 3050, 3100, 3775, 3782, 4681, 6100, 7550, 7564, 9211, 9362, 9455, 15100, 18422, 18724, 18910, 23405, 36844, 37820, 46055, 46810, 47275, 92110, 93620, 94550, 117025, 184220, 189100, 230275, 234050, 285541, 460550, 468100, 571082, 921100, 1142164, 1427705, 2855410, 5710820, 7138525, 14277050, 28554100]

約数ペア:

[(1, 28554100), (2, 14277050), (4, 7138525), (5, 5710820), (10, 2855410), (20, 1427705), (25, 1142164), (31, 921100), (50, 571082), (61, 468100), (62, 460550), (100, 285541), (122, 234050), (124, 230275), (151, 189100), (155, 184220), (244, 117025), (302, 94550), (305, 93620), (310, 92110), (604, 47275), (610, 46810), (620, 46055), (755, 37820), (775, 36844), (1220, 23405), (1510, 18910), (1525, 18724), (1550, 18422), (1891, 15100), (3020, 9455), (3050, 9362), (3100, 9211), (3775, 7564), (3782, 7550), (4681, 6100)]