81287880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{39847}}^1$

素因数の和:39878

約数の個数: 64

約数和(自身を含む): 258215040

約数和(自身を除く): 176927160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 39847, 79694, 119541, 159388, 199235, 239082, 318776, 398470, 478164, 597705, 677399, 796940, 956328, 1195410, 1354798, 1593880, 2032197, 2390820, 2709596, 3386995, 4064394, 4781640, 5419192, 6773990, 8128788, 10160985, 13547980, 16257576, 20321970, 27095960, 40643940, 81287880]

約数ペア:

[(1, 81287880), (2, 40643940), (3, 27095960), (4, 20321970), (5, 16257576), (6, 13547980), (8, 10160985), (10, 8128788), (12, 6773990), (15, 5419192), (17, 4781640), (20, 4064394), (24, 3386995), (30, 2709596), (34, 2390820), (40, 2032197), (51, 1593880), (60, 1354798), (68, 1195410), (85, 956328), (102, 796940), (120, 677399), (136, 597705), (170, 478164), (204, 398470), (255, 318776), (340, 239082), (408, 199235), (510, 159388), (680, 119541), (1020, 79694), (2040, 39847)]