689461640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:559

約数の個数: 128

約数和(自身を含む): 1822176000

約数和(自身を除く): 1132714360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 73, 89, 140, 146, 178, 280, 292, 356, 365, 379, 445, 511, 584, 623, 712, 730, 758, 890, 1022, 1246, 1460, 1516, 1780, 1895, 2044, 2492, 2555, 2653, 2920, 3032, 3115, 3560, 3790, 4088, 4984, 5110, 5306, 6230, 6497, 7580, 10220, 10612, 12460, 12994, 13265, 15160, 20440, 21224, 24920, 25988, 26530, 27667, 32485, 33731, 45479, 51976, 53060, 55334, 64970, 67462, 90958, 106120, 110668, 129940, 134924, 138335, 168655, 181916, 193669, 221336, 227395, 236117, 259880, 269848, 276670, 337310, 363832, 387338, 454790, 472234, 553340, 674620, 774676, 909580, 944468, 968345, 1106680, 1180585, 1349240, 1549352, 1819160, 1888936, 1936690, 2361170, 2462363, 3873380, 4722340, 4924726, 7746760, 9444680, 9849452, 12311815, 17236541, 19698904, 24623630, 34473082, 49247260, 68946164, 86182705, 98494520, 137892328, 172365410, 344730820, 689461640]

約数ペア:

[(1, 689461640), (2, 344730820), (4, 172365410), (5, 137892328), (7, 98494520), (8, 86182705), (10, 68946164), (14, 49247260), (20, 34473082), (28, 24623630), (35, 19698904), (40, 17236541), (56, 12311815), (70, 9849452), (73, 9444680), (89, 7746760), (140, 4924726), (146, 4722340), (178, 3873380), (280, 2462363), (292, 2361170), (356, 1936690), (365, 1888936), (379, 1819160), (445, 1549352), (511, 1349240), (584, 1180585), (623, 1106680), (712, 968345), (730, 944468), (758, 909580), (890, 774676), (1022, 674620), (1246, 553340), (1460, 472234), (1516, 454790), (1780, 387338), (1895, 363832), (2044, 337310), (2492, 276670), (2555, 269848), (2653, 259880), (2920, 236117), (3032, 227395), (3115, 221336), (3560, 193669), (3790, 181916), (4088, 168655), (4984, 138335), (5110, 134924), (5306, 129940), (6230, 110668), (6497, 106120), (7580, 90958), (10220, 67462), (10612, 64970), (12460, 55334), (12994, 53060), (13265, 51976), (15160, 45479), (20440, 33731), (21224, 32485), (24920, 27667), (25988, 26530)]