20819910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{367}}^1$

素因数の和:469

約数の個数: 64

約数和(自身を含む): 52568064

約数和(自身を除く): 31748154

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 61, 62, 93, 122, 155, 183, 186, 305, 310, 366, 367, 465, 610, 734, 915, 930, 1101, 1830, 1835, 1891, 2202, 3670, 3782, 5505, 5673, 9455, 11010, 11346, 11377, 18910, 22387, 22754, 28365, 34131, 44774, 56730, 56885, 67161, 68262, 111935, 113770, 134322, 170655, 223870, 335805, 341310, 671610, 693997, 1387994, 2081991, 3469985, 4163982, 6939970, 10409955, 20819910]

約数ペア:

[(1, 20819910), (2, 10409955), (3, 6939970), (5, 4163982), (6, 3469985), (10, 2081991), (15, 1387994), (30, 693997), (31, 671610), (61, 341310), (62, 335805), (93, 223870), (122, 170655), (155, 134322), (183, 113770), (186, 111935), (305, 68262), (310, 67161), (366, 56885), (367, 56730), (465, 44774), (610, 34131), (734, 28365), (915, 22754), (930, 22387), (1101, 18910), (1830, 11377), (1835, 11346), (1891, 11010), (2202, 9455), (3670, 5673), (3782, 5505)]