638828905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{151}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 930940416

約数和(自身を除く): 292111511

約数列:

[1, 5, 11, 13, 55, 61, 65, 97, 143, 151, 305, 485, 671, 715, 755, 793, 1067, 1261, 1661, 1963, 3355, 3965, 5335, 5917, 6305, 8305, 8723, 9211, 9815, 13871, 14647, 21593, 29585, 43615, 46055, 65087, 69355, 73235, 76921, 101321, 107965, 119743, 161117, 190411, 325435, 384605, 506605, 598715, 805585, 846131, 893467, 952055, 1317173, 2094521, 4230655, 4467335, 6585865, 9828137, 10472605, 11615071, 49140685, 58075355, 127765781, 638828905]

約数ペア:

[(1, 638828905), (5, 127765781), (11, 58075355), (13, 49140685), (55, 11615071), (61, 10472605), (65, 9828137), (97, 6585865), (143, 4467335), (151, 4230655), (305, 2094521), (485, 1317173), (671, 952055), (715, 893467), (755, 846131), (793, 805585), (1067, 598715), (1261, 506605), (1661, 384605), (1963, 325435), (3355, 190411), (3965, 161117), (5335, 119743), (5917, 107965), (6305, 101321), (8305, 76921), (8723, 73235), (9211, 69355), (9815, 65087), (13871, 46055), (14647, 43615), (21593, 29585)]