21888152020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{379}}^1\times {\mathrm{1901}}^1$

素因数の和:2334

約数の個数: 144

約数和(自身を含む): 55369198080

約数和(自身を除く): 33481046060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 379, 434, 490, 620, 758, 868, 980, 1085, 1516, 1519, 1895, 1901, 2170, 2653, 3038, 3790, 3802, 4340, 5306, 6076, 7580, 7595, 7604, 9505, 10612, 11749, 13265, 13307, 15190, 18571, 19010, 23498, 26530, 26614, 30380, 37142, 38020, 46996, 53060, 53228, 58745, 58931, 66535, 74284, 82243, 92855, 93149, 117490, 117862, 133070, 164486, 185710, 186298, 234980, 235724, 266140, 294655, 328972, 371420, 372596, 411215, 412517, 465745, 575701, 589310, 720479, 822430, 825034, 931490, 1151402, 1178620, 1440958, 1644860, 1650068, 1862980, 2062585, 2302804, 2878505, 2881916, 2887619, 3602395, 4125170, 5043353, 5757010, 5775238, 7204790, 8250340, 10086706, 11514020, 11550476, 14409580, 14438095, 20173412, 22334849, 25216765, 28876190, 35303471, 44669698, 50433530, 57752380, 70606942, 89339396, 100867060, 111674245, 141213884, 156343943, 176517355, 223348490, 312687886, 353034710, 446696980, 625375772, 706069420, 781719715, 1094407601, 1563439430, 2188815202, 3126878860, 4377630404, 5472038005, 10944076010, 21888152020]

約数ペア:

[(1, 21888152020), (2, 10944076010), (4, 5472038005), (5, 4377630404), (7, 3126878860), (10, 2188815202), (14, 1563439430), (20, 1094407601), (28, 781719715), (31, 706069420), (35, 625375772), (49, 446696980), (62, 353034710), (70, 312687886), (98, 223348490), (124, 176517355), (140, 156343943), (155, 141213884), (196, 111674245), (217, 100867060), (245, 89339396), (310, 70606942), (379, 57752380), (434, 50433530), (490, 44669698), (620, 35303471), (758, 28876190), (868, 25216765), (980, 22334849), (1085, 20173412), (1516, 14438095), (1519, 14409580), (1895, 11550476), (1901, 11514020), (2170, 10086706), (2653, 8250340), (3038, 7204790), (3790, 5775238), (3802, 5757010), (4340, 5043353), (5306, 4125170), (6076, 3602395), (7580, 2887619), (7595, 2881916), (7604, 2878505), (9505, 2302804), (10612, 2062585), (11749, 1862980), (13265, 1650068), (13307, 1644860), (15190, 1440958), (18571, 1178620), (19010, 1151402), (23498, 931490), (26530, 825034), (26614, 822430), (30380, 720479), (37142, 589310), (38020, 575701), (46996, 465745), (53060, 412517), (53228, 411215), (58745, 372596), (58931, 371420), (66535, 328972), (74284, 294655), (82243, 266140), (92855, 235724), (93149, 234980), (117490, 186298), (117862, 185710), (133070, 164486)]