128804780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:387

約数の個数: 96

約数和(自身を含む): 306427968

約数和(自身を除く): 177623188

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 41, 43, 52, 65, 82, 86, 130, 164, 172, 205, 215, 260, 281, 410, 430, 533, 559, 562, 820, 860, 1066, 1118, 1124, 1405, 1763, 2132, 2236, 2665, 2795, 2810, 3526, 3653, 5330, 5590, 5620, 7052, 7306, 8815, 10660, 11180, 11521, 12083, 14612, 17630, 18265, 22919, 23042, 24166, 35260, 36530, 45838, 46084, 48332, 57605, 60415, 73060, 91676, 114595, 115210, 120830, 149773, 157079, 229190, 230420, 241660, 299546, 314158, 458380, 495403, 599092, 628316, 748865, 785395, 990806, 1497730, 1570790, 1981612, 2477015, 2995460, 3141580, 4954030, 6440239, 9908060, 12880478, 25760956, 32201195, 64402390, 128804780]

約数ペア:

[(1, 128804780), (2, 64402390), (4, 32201195), (5, 25760956), (10, 12880478), (13, 9908060), (20, 6440239), (26, 4954030), (41, 3141580), (43, 2995460), (52, 2477015), (65, 1981612), (82, 1570790), (86, 1497730), (130, 990806), (164, 785395), (172, 748865), (205, 628316), (215, 599092), (260, 495403), (281, 458380), (410, 314158), (430, 299546), (533, 241660), (559, 230420), (562, 229190), (820, 157079), (860, 149773), (1066, 120830), (1118, 115210), (1124, 114595), (1405, 91676), (1763, 73060), (2132, 60415), (2236, 57605), (2665, 48332), (2795, 46084), (2810, 45838), (3526, 36530), (3653, 35260), (5330, 24166), (5590, 23042), (5620, 22919), (7052, 18265), (7306, 17630), (8815, 14612), (10660, 12083), (11180, 11521)]