20409990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{587}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 52496640

約数和(自身を除く): 32086650

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 61, 95, 114, 122, 183, 190, 285, 305, 366, 570, 587, 610, 915, 1159, 1174, 1761, 1830, 2318, 2935, 3477, 3522, 5795, 5870, 6954, 8805, 11153, 11590, 17385, 17610, 22306, 33459, 34770, 35807, 55765, 66918, 71614, 107421, 111530, 167295, 179035, 214842, 334590, 358070, 537105, 680333, 1074210, 1360666, 2040999, 3401665, 4081998, 6803330, 10204995, 20409990]

約数ペア:

[(1, 20409990), (2, 10204995), (3, 6803330), (5, 4081998), (6, 3401665), (10, 2040999), (15, 1360666), (19, 1074210), (30, 680333), (38, 537105), (57, 358070), (61, 334590), (95, 214842), (114, 179035), (122, 167295), (183, 111530), (190, 107421), (285, 71614), (305, 66918), (366, 55765), (570, 35807), (587, 34770), (610, 33459), (915, 22306), (1159, 17610), (1174, 17385), (1761, 11590), (1830, 11153), (2318, 8805), (2935, 6954), (3477, 5870), (3522, 5795)]