400525580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{229}}^1$

素因数の和:320

約数の個数: 144

約数和(自身を含む): 1074346560

約数和(自身を除く): 673820980

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 229, 260, 310, 364, 403, 434, 455, 458, 620, 806, 868, 910, 916, 961, 1085, 1145, 1603, 1612, 1820, 1922, 2015, 2170, 2290, 2821, 2977, 3206, 3844, 4030, 4340, 4580, 4805, 5642, 5954, 6412, 6727, 7099, 8015, 8060, 9610, 11284, 11908, 12493, 13454, 14105, 14198, 14885, 16030, 19220, 20839, 24986, 26908, 28210, 28396, 29770, 32060, 33635, 35495, 41678, 49693, 49972, 56420, 59540, 62465, 67270, 70990, 83356, 87451, 92287, 99386, 104195, 124930, 134540, 141980, 174902, 184574, 198772, 208390, 220069, 248465, 249860, 349804, 369148, 416780, 437255, 440138, 461435, 496930, 646009, 874510, 880276, 922870, 993860, 1100345, 1292018, 1540483, 1749020, 1845740, 2200690, 2584036, 2860897, 3080966, 3230045, 4401380, 5721794, 6161932, 6460090, 7702415, 11443588, 12920180, 14304485, 15404830, 20026279, 28608970, 30809660, 40052558, 57217940, 80105116, 100131395, 200262790, 400525580]

約数ペア:

[(1, 400525580), (2, 200262790), (4, 100131395), (5, 80105116), (7, 57217940), (10, 40052558), (13, 30809660), (14, 28608970), (20, 20026279), (26, 15404830), (28, 14304485), (31, 12920180), (35, 11443588), (52, 7702415), (62, 6460090), (65, 6161932), (70, 5721794), (91, 4401380), (124, 3230045), (130, 3080966), (140, 2860897), (155, 2584036), (182, 2200690), (217, 1845740), (229, 1749020), (260, 1540483), (310, 1292018), (364, 1100345), (403, 993860), (434, 922870), (455, 880276), (458, 874510), (620, 646009), (806, 496930), (868, 461435), (910, 440138), (916, 437255), (961, 416780), (1085, 369148), (1145, 349804), (1603, 249860), (1612, 248465), (1820, 220069), (1922, 208390), (2015, 198772), (2170, 184574), (2290, 174902), (2821, 141980), (2977, 134540), (3206, 124930), (3844, 104195), (4030, 99386), (4340, 92287), (4580, 87451), (4805, 83356), (5642, 70990), (5954, 67270), (6412, 62465), (6727, 59540), (7099, 56420), (8015, 49972), (8060, 49693), (9610, 41678), (11284, 35495), (11908, 33635), (12493, 32060), (13454, 29770), (14105, 28396), (14198, 28210), (14885, 26908), (16030, 24986), (19220, 20839)]