21305374.000000000

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:160

約数の個数: 108

約数和(自身を含む): 246046752

約数和(自身を除く): 142548052

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 47, 50, 61, 76, 94, 95, 100, 122, 188, 190, 235, 244, 305, 361, 380, 470, 475, 610, 722, 893, 940, 950, 1159, 1175, 1220, 1444, 1525, 1786, 1805, 1900, 2318, 2350, 2867, 3050, 3572, 3610, 4465, 4636, 4700, 5734, 5795, 6100, 7220, 8930, 9025, 11468, 11590, 14335, 16967, 17860, 18050, 22021, 22325, 23180, 28670, 28975, 33934, 36100, 44042, 44650, 54473, 57340, 57950, 67868, 71675, 84835, 88084, 89300, 108946, 110105, 115900, 143350, 169670, 217892, 220210, 272365, 286700, 339340, 424175, 440420, 544730, 550525, 848350, 1034987, 1089460, 1101050, 1361825, 1696700, 2069974, 2202100, 2723650, 4139948, 5174935, 5447300, 10349870, 20699740, 25874675, 51749350, 103498700]

約数ペア:

[(1, 103498700), (2, 51749350), (4, 25874675), (5, 20699740), (10, 10349870), (19, 5447300), (20, 5174935), (25, 4139948), (38, 2723650), (47, 2202100), (50, 2069974), (61, 1696700), (76, 1361825), (94, 1101050), (95, 1089460), (100, 1034987), (122, 848350), (188, 550525), (190, 544730), (235, 440420), (244, 424175), (305, 339340), (361, 286700), (380, 272365), (470, 220210), (475, 217892), (610, 169670), (722, 143350), (893, 115900), (940, 110105), (950, 108946), (1159, 89300), (1175, 88084), (1220, 84835), (1444, 71675), (1525, 67868), (1786, 57950), (1805, 57340), (1900, 54473), (2318, 44650), (2350, 44042), (2867, 36100), (3050, 33934), (3572, 28975), (3610, 28670), (4465, 23180), (4636, 22325), (4700, 22021), (5734, 18050), (5795, 17860), (6100, 16967), (7220, 14335), (8930, 11590), (9025, 11468)]