21497639260

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{1861}}^1\times {\mathrm{12289}}^1$

素因数の和:14206

約数の個数: 48

約数和(自身を含む): 46134103680

約数和(自身を除く): 24636464420

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 1861, 3722, 7444, 9305, 12289, 18610, 24578, 37220, 49156, 61445, 87467, 122890, 174934, 245780, 349868, 437335, 577583, 874670, 1155166, 1749340, 2310332, 2887915, 5775830, 11551660, 22869829, 45739658, 91479316, 114349145, 228698290, 457396580, 1074881963, 2149763926, 4299527852, 5374409815, 10748819630, 21497639260]

約数ペア:

[(1, 21497639260), (2, 10748819630), (4, 5374409815), (5, 4299527852), (10, 2149763926), (20, 1074881963), (47, 457396580), (94, 228698290), (188, 114349145), (235, 91479316), (470, 45739658), (940, 22869829), (1861, 11551660), (3722, 5775830), (7444, 2887915), (9305, 2310332), (12289, 1749340), (18610, 1155166), (24578, 874670), (37220, 577583), (49156, 437335), (61445, 349868), (87467, 245780), (122890, 174934)]