11981840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:348

約数の個数: 80

約数和(自身を含む): 30841776

約数和(自身を除く): 18859936

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 41, 52, 65, 80, 82, 104, 130, 164, 205, 208, 260, 281, 328, 410, 520, 533, 562, 656, 820, 1040, 1066, 1124, 1405, 1640, 2132, 2248, 2665, 2810, 3280, 3653, 4264, 4496, 5330, 5620, 7306, 8528, 10660, 11240, 11521, 14612, 18265, 21320, 22480, 23042, 29224, 36530, 42640, 46084, 57605, 58448, 73060, 92168, 115210, 146120, 149773, 184336, 230420, 292240, 299546, 460840, 599092, 748865, 921680, 1198184, 1497730, 2396368, 2995460, 5990920, 11981840]

約数ペア:

[(1, 11981840), (2, 5990920), (4, 2995460), (5, 2396368), (8, 1497730), (10, 1198184), (13, 921680), (16, 748865), (20, 599092), (26, 460840), (40, 299546), (41, 292240), (52, 230420), (65, 184336), (80, 149773), (82, 146120), (104, 115210), (130, 92168), (164, 73060), (205, 58448), (208, 57605), (260, 46084), (281, 42640), (328, 36530), (410, 29224), (520, 23042), (533, 22480), (562, 21320), (656, 18265), (820, 14612), (1040, 11521), (1066, 11240), (1124, 10660), (1405, 8528), (1640, 7306), (2132, 5620), (2248, 5330), (2665, 4496), (2810, 4264), (3280, 3653)]