20881536

素因数分解:

$2^7\times 3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:166

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 40808064

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 32, 39, 47, 48, 52, 64, 78, 89, 94, 96, 104, 128, 141, 156, 178, 188, 192, 208, 267, 282, 312, 356, 376, 384, 416, 534, 564, 611, 624, 712, 752, 832, 1068, 1128, 1157, 1222, 1248, 1424, 1504, 1664, 1833, 2136, 2256, 2314, 2444, 2496, 2848, 3008, 3471, 3666, 4183, 4272, 4512, 4628, 4888, 4992, 5696, 6016, 6942, 7332, 8366, 8544, 9024, 9256, 9776, 11392, 12549, 13884, 14664, 16732, 17088, 18048, 18512, 19552, 25098, 27768, 29328, 33464, 34176, 37024, 39104, 50196, 54379, 55536, 58656, 66928, 74048, 78208, 100392, 108758, 111072, 117312, 133856, 148096, 163137, 200784, 217516, 222144, 234624, 267712, 326274, 401568, 435032, 444288, 535424, 652548, 803136, 870064, 1305096, 1606272, 1740128, 2610192, 3480256, 5220384, 6960512, 10440768, 20881536]

約数ペア:

[(1, 20881536), (2, 10440768), (3, 6960512), (4, 5220384), (6, 3480256), (8, 2610192), (12, 1740128), (13, 1606272), (16, 1305096), (24, 870064), (26, 803136), (32, 652548), (39, 535424), (47, 444288), (48, 435032), (52, 401568), (64, 326274), (78, 267712), (89, 234624), (94, 222144), (96, 217516), (104, 200784), (128, 163137), (141, 148096), (156, 133856), (178, 117312), (188, 111072), (192, 108758), (208, 100392), (267, 78208), (282, 74048), (312, 66928), (356, 58656), (376, 55536), (384, 54379), (416, 50196), (534, 39104), (564, 37024), (611, 34176), (624, 33464), (712, 29328), (752, 27768), (832, 25098), (1068, 19552), (1128, 18512), (1157, 18048), (1222, 17088), (1248, 16732), (1424, 14664), (1504, 13884), (1664, 12549), (1833, 11392), (2136, 9776), (2256, 9256), (2314, 9024), (2444, 8544), (2496, 8366), (2848, 7332), (3008, 6942), (3471, 6016), (3666, 5696), (4183, 4992), (4272, 4888), (4512, 4628)]