18191420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 96

約数和(自身を含む): 44330496

約数和(自身を除く): 26139076

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 37, 52, 61, 62, 65, 74, 122, 124, 130, 148, 155, 185, 244, 260, 305, 310, 370, 403, 481, 610, 620, 740, 793, 806, 962, 1147, 1220, 1586, 1612, 1891, 1924, 2015, 2257, 2294, 2405, 3172, 3782, 3965, 4030, 4514, 4588, 4810, 5735, 7564, 7930, 8060, 9028, 9455, 9620, 11285, 11470, 14911, 15860, 18910, 22570, 22940, 24583, 29341, 29822, 37820, 45140, 49166, 58682, 59644, 69967, 74555, 98332, 117364, 122915, 139934, 146705, 149110, 245830, 279868, 293410, 298220, 349835, 491660, 586820, 699670, 909571, 1399340, 1819142, 3638284, 4547855, 9095710, 18191420]

約数ペア:

[(1, 18191420), (2, 9095710), (4, 4547855), (5, 3638284), (10, 1819142), (13, 1399340), (20, 909571), (26, 699670), (31, 586820), (37, 491660), (52, 349835), (61, 298220), (62, 293410), (65, 279868), (74, 245830), (122, 149110), (124, 146705), (130, 139934), (148, 122915), (155, 117364), (185, 98332), (244, 74555), (260, 69967), (305, 59644), (310, 58682), (370, 49166), (403, 45140), (481, 37820), (610, 29822), (620, 29341), (740, 24583), (793, 22940), (806, 22570), (962, 18910), (1147, 15860), (1220, 14911), (1586, 11470), (1612, 11285), (1891, 9620), (1924, 9455), (2015, 9028), (2257, 8060), (2294, 7930), (2405, 7564), (3172, 5735), (3782, 4810), (3965, 4588), (4030, 4514)]