21728200

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 55699560

約数和(自身を除く): 33971360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 61, 65, 100, 104, 122, 130, 137, 200, 244, 260, 274, 305, 325, 488, 520, 548, 610, 650, 685, 793, 1096, 1220, 1300, 1370, 1525, 1586, 1781, 2440, 2600, 2740, 3050, 3172, 3425, 3562, 3965, 5480, 6100, 6344, 6850, 7124, 7930, 8357, 8905, 12200, 13700, 14248, 15860, 16714, 17810, 19825, 27400, 31720, 33428, 35620, 39650, 41785, 44525, 66856, 71240, 79300, 83570, 89050, 108641, 158600, 167140, 178100, 208925, 217282, 334280, 356200, 417850, 434564, 543205, 835700, 869128, 1086410, 1671400, 2172820, 2716025, 4345640, 5432050, 10864100, 21728200]

約数ペア:

[(1, 21728200), (2, 10864100), (4, 5432050), (5, 4345640), (8, 2716025), (10, 2172820), (13, 1671400), (20, 1086410), (25, 869128), (26, 835700), (40, 543205), (50, 434564), (52, 417850), (61, 356200), (65, 334280), (100, 217282), (104, 208925), (122, 178100), (130, 167140), (137, 158600), (200, 108641), (244, 89050), (260, 83570), (274, 79300), (305, 71240), (325, 66856), (488, 44525), (520, 41785), (548, 39650), (610, 35620), (650, 33428), (685, 31720), (793, 27400), (1096, 19825), (1220, 17810), (1300, 16714), (1370, 15860), (1525, 14248), (1586, 13700), (1781, 12200), (2440, 8905), (2600, 8357), (2740, 7930), (3050, 7124), (3172, 6850), (3425, 6344), (3562, 6100), (3965, 5480)]