20390256

素因数分解:

$2^4\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1$

素因数の和:183

約数の個数: 120

約数和(自身を含む): 60643440

約数和(自身を除く): 40253184

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 37, 43, 48, 72, 74, 86, 89, 111, 129, 144, 148, 172, 178, 222, 258, 267, 296, 333, 344, 356, 387, 444, 516, 534, 592, 666, 688, 712, 774, 801, 888, 1032, 1068, 1332, 1424, 1548, 1591, 1602, 1776, 2064, 2136, 2664, 3096, 3182, 3204, 3293, 3827, 4272, 4773, 5328, 6192, 6364, 6408, 6586, 7654, 9546, 9879, 11481, 12728, 12816, 13172, 14319, 15308, 19092, 19758, 22962, 25456, 26344, 28638, 29637, 30616, 34443, 38184, 39516, 45924, 52688, 57276, 59274, 61232, 68886, 76368, 79032, 91848, 114552, 118548, 137772, 141599, 158064, 183696, 229104, 237096, 275544, 283198, 424797, 474192, 551088, 566396, 849594, 1132792, 1274391, 1699188, 2265584, 2548782, 3398376, 5097564, 6796752, 10195128, 20390256]

約数ペア:

[(1, 20390256), (2, 10195128), (3, 6796752), (4, 5097564), (6, 3398376), (8, 2548782), (9, 2265584), (12, 1699188), (16, 1274391), (18, 1132792), (24, 849594), (36, 566396), (37, 551088), (43, 474192), (48, 424797), (72, 283198), (74, 275544), (86, 237096), (89, 229104), (111, 183696), (129, 158064), (144, 141599), (148, 137772), (172, 118548), (178, 114552), (222, 91848), (258, 79032), (267, 76368), (296, 68886), (333, 61232), (344, 59274), (356, 57276), (387, 52688), (444, 45924), (516, 39516), (534, 38184), (592, 34443), (666, 30616), (688, 29637), (712, 28638), (774, 26344), (801, 25456), (888, 22962), (1032, 19758), (1068, 19092), (1332, 15308), (1424, 14319), (1548, 13172), (1591, 12816), (1602, 12728), (1776, 11481), (2064, 9879), (2136, 9546), (2664, 7654), (3096, 6586), (3182, 6408), (3204, 6364), (3293, 6192), (3827, 5328), (4272, 4773)]