18947820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:271

約数の個数: 96

約数和(自身を含む): 55996416

約数和(自身を除く): 37048596

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 61, 62, 93, 122, 124, 155, 167, 183, 186, 244, 305, 310, 334, 366, 372, 465, 501, 610, 620, 668, 732, 835, 915, 930, 1002, 1220, 1670, 1830, 1860, 1891, 2004, 2505, 3340, 3660, 3782, 5010, 5177, 5673, 7564, 9455, 10020, 10187, 10354, 11346, 15531, 18910, 20374, 20708, 22692, 25885, 28365, 30561, 31062, 37820, 40748, 50935, 51770, 56730, 61122, 62124, 77655, 101870, 103540, 113460, 122244, 152805, 155310, 203740, 305610, 310620, 315797, 611220, 631594, 947391, 1263188, 1578985, 1894782, 3157970, 3789564, 4736955, 6315940, 9473910, 18947820]

約数ペア:

[(1, 18947820), (2, 9473910), (3, 6315940), (4, 4736955), (5, 3789564), (6, 3157970), (10, 1894782), (12, 1578985), (15, 1263188), (20, 947391), (30, 631594), (31, 611220), (60, 315797), (61, 310620), (62, 305610), (93, 203740), (122, 155310), (124, 152805), (155, 122244), (167, 113460), (183, 103540), (186, 101870), (244, 77655), (305, 62124), (310, 61122), (334, 56730), (366, 51770), (372, 50935), (465, 40748), (501, 37820), (610, 31062), (620, 30561), (668, 28365), (732, 25885), (835, 22692), (915, 20708), (930, 20374), (1002, 18910), (1220, 15531), (1670, 11346), (1830, 10354), (1860, 10187), (1891, 10020), (2004, 9455), (2505, 7564), (3340, 5673), (3660, 5177), (3782, 5010)]