255641820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{977}}^1$

素因数の和:1092

約数の個数: 144

約数和(自身を含む): 842879520

約数和(自身を除く): 587237700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 89, 98, 105, 140, 147, 178, 196, 210, 245, 267, 294, 356, 420, 445, 490, 534, 588, 623, 735, 890, 977, 980, 1068, 1246, 1335, 1470, 1780, 1869, 1954, 2492, 2670, 2931, 2940, 3115, 3738, 3908, 4361, 4885, 5340, 5862, 6230, 6839, 7476, 8722, 9345, 9770, 11724, 12460, 13083, 13678, 14655, 17444, 18690, 19540, 20517, 21805, 26166, 27356, 29310, 34195, 37380, 41034, 43610, 47873, 52332, 58620, 65415, 68390, 82068, 86953, 87220, 95746, 102585, 130830, 136780, 143619, 173906, 191492, 205170, 239365, 260859, 261660, 287238, 347812, 410340, 434765, 478730, 521718, 574476, 608671, 718095, 869530, 957460, 1043436, 1217342, 1304295, 1436190, 1739060, 1826013, 2434684, 2608590, 2872380, 3043355, 3652026, 4260697, 5217180, 6086710, 7304052, 8521394, 9130065, 12173420, 12782091, 17042788, 18260130, 21303485, 25564182, 36520260, 42606970, 51128364, 63910455, 85213940, 127820910, 255641820]

約数ペア:

[(1, 255641820), (2, 127820910), (3, 85213940), (4, 63910455), (5, 51128364), (6, 42606970), (7, 36520260), (10, 25564182), (12, 21303485), (14, 18260130), (15, 17042788), (20, 12782091), (21, 12173420), (28, 9130065), (30, 8521394), (35, 7304052), (42, 6086710), (49, 5217180), (60, 4260697), (70, 3652026), (84, 3043355), (89, 2872380), (98, 2608590), (105, 2434684), (140, 1826013), (147, 1739060), (178, 1436190), (196, 1304295), (210, 1217342), (245, 1043436), (267, 957460), (294, 869530), (356, 718095), (420, 608671), (445, 574476), (490, 521718), (534, 478730), (588, 434765), (623, 410340), (735, 347812), (890, 287238), (977, 261660), (980, 260859), (1068, 239365), (1246, 205170), (1335, 191492), (1470, 173906), (1780, 143619), (1869, 136780), (1954, 130830), (2492, 102585), (2670, 95746), (2931, 87220), (2940, 86953), (3115, 82068), (3738, 68390), (3908, 65415), (4361, 58620), (4885, 52332), (5340, 47873), (5862, 43610), (6230, 41034), (6839, 37380), (7476, 34195), (8722, 29310), (9345, 27356), (9770, 26166), (11724, 21805), (12460, 20517), (13083, 19540), (13678, 18690), (14655, 17444)]