217418710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{251}}^1$

素因数の和:421

約数の個数: 64

約数和(自身を含む): 426746880

約数和(自身を除く): 209328170

約数列:

[1, 2, 5, 10, 19, 38, 47, 94, 95, 97, 190, 194, 235, 251, 470, 485, 502, 893, 970, 1255, 1786, 1843, 2510, 3686, 4465, 4559, 4769, 8930, 9118, 9215, 9538, 11797, 18430, 22795, 23594, 23845, 24347, 45590, 47690, 48694, 58985, 86621, 117970, 121735, 173242, 224143, 243470, 433105, 448286, 462593, 866210, 925186, 1120715, 1144309, 2241430, 2288618, 2312965, 4625930, 5721545, 11443090, 21741871, 43483742, 108709355, 217418710]

約数ペア:

[(1, 217418710), (2, 108709355), (5, 43483742), (10, 21741871), (19, 11443090), (38, 5721545), (47, 4625930), (94, 2312965), (95, 2288618), (97, 2241430), (190, 1144309), (194, 1120715), (235, 925186), (251, 866210), (470, 462593), (485, 448286), (502, 433105), (893, 243470), (970, 224143), (1255, 173242), (1786, 121735), (1843, 117970), (2510, 86621), (3686, 58985), (4465, 48694), (4559, 47690), (4769, 45590), (8930, 24347), (9118, 23845), (9215, 23594), (9538, 22795), (11797, 18430)]