21128490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:268

約数の個数: 96

約数和(自身を含む): 58631040

約数和(自身を除く): 37502550

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 30, 45, 46, 59, 69, 90, 115, 118, 138, 173, 177, 207, 230, 295, 345, 346, 354, 414, 519, 531, 590, 690, 865, 885, 1035, 1038, 1062, 1357, 1557, 1730, 1770, 2070, 2595, 2655, 2714, 3114, 3979, 4071, 5190, 5310, 6785, 7785, 7958, 8142, 10207, 11937, 12213, 13570, 15570, 19895, 20355, 20414, 23874, 24426, 30621, 35811, 39790, 40710, 51035, 59685, 61065, 61242, 71622, 91863, 102070, 119370, 122130, 153105, 179055, 183726, 234761, 306210, 358110, 459315, 469522, 704283, 918630, 1173805, 1408566, 2112849, 2347610, 3521415, 4225698, 7042830, 10564245, 21128490]

約数ペア:

[(1, 21128490), (2, 10564245), (3, 7042830), (5, 4225698), (6, 3521415), (9, 2347610), (10, 2112849), (15, 1408566), (18, 1173805), (23, 918630), (30, 704283), (45, 469522), (46, 459315), (59, 358110), (69, 306210), (90, 234761), (115, 183726), (118, 179055), (138, 153105), (173, 122130), (177, 119370), (207, 102070), (230, 91863), (295, 71622), (345, 61242), (346, 61065), (354, 59685), (414, 51035), (519, 40710), (531, 39790), (590, 35811), (690, 30621), (865, 24426), (885, 23874), (1035, 20414), (1038, 20355), (1062, 19895), (1357, 15570), (1557, 13570), (1730, 12213), (1770, 11937), (2070, 10207), (2595, 8142), (2655, 7958), (2714, 7785), (3114, 6785), (3979, 5310), (4071, 5190)]