21159840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3391}}^1$

素因数の和:3422

約数の個数: 96

約数和(自身を含む): 71801856

約数和(自身を除く): 50642016

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 78, 80, 96, 104, 120, 130, 156, 160, 195, 208, 240, 260, 312, 390, 416, 480, 520, 624, 780, 1040, 1248, 1560, 2080, 3120, 3391, 6240, 6782, 10173, 13564, 16955, 20346, 27128, 33910, 40692, 44083, 50865, 54256, 67820, 81384, 88166, 101730, 108512, 132249, 135640, 162768, 176332, 203460, 220415, 264498, 271280, 325536, 352664, 406920, 440830, 528996, 542560, 661245, 705328, 813840, 881660, 1057992, 1322490, 1410656, 1627680, 1763320, 2115984, 2644980, 3526640, 4231968, 5289960, 7053280, 10579920, 21159840]

約数ペア:

[(1, 21159840), (2, 10579920), (3, 7053280), (4, 5289960), (5, 4231968), (6, 3526640), (8, 2644980), (10, 2115984), (12, 1763320), (13, 1627680), (15, 1410656), (16, 1322490), (20, 1057992), (24, 881660), (26, 813840), (30, 705328), (32, 661245), (39, 542560), (40, 528996), (48, 440830), (52, 406920), (60, 352664), (65, 325536), (78, 271280), (80, 264498), (96, 220415), (104, 203460), (120, 176332), (130, 162768), (156, 135640), (160, 132249), (195, 108512), (208, 101730), (240, 88166), (260, 81384), (312, 67820), (390, 54256), (416, 50865), (480, 44083), (520, 40692), (624, 33910), (780, 27128), (1040, 20346), (1248, 16955), (1560, 13564), (2080, 10173), (3120, 6782), (3391, 6240)]