81863810

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:880

約数の個数: 64

約数和(自身を含む): 177984000

約数和(自身を除く): 96120190

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 343, 406, 490, 686, 823, 1015, 1421, 1646, 1715, 2030, 2842, 3430, 4115, 5761, 7105, 8230, 9947, 11522, 14210, 19894, 23867, 28805, 40327, 47734, 49735, 57610, 80654, 99470, 119335, 167069, 201635, 238670, 282289, 334138, 403270, 564578, 835345, 1169483, 1411445, 1670690, 2338966, 2822890, 5847415, 8186381, 11694830, 16372762, 40931905, 81863810]

約数ペア:

[(1, 81863810), (2, 40931905), (5, 16372762), (7, 11694830), (10, 8186381), (14, 5847415), (29, 2822890), (35, 2338966), (49, 1670690), (58, 1411445), (70, 1169483), (98, 835345), (145, 564578), (203, 403270), (245, 334138), (290, 282289), (343, 238670), (406, 201635), (490, 167069), (686, 119335), (823, 99470), (1015, 80654), (1421, 57610), (1646, 49735), (1715, 47734), (2030, 40327), (2842, 28805), (3430, 23867), (4115, 19894), (5761, 14210), (7105, 11522), (8230, 9947)]