161815040

素因数分解:

$2^9\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2039}}^1$

素因数の和:2093

約数の個数: 80

約数和(自身を含む): 400688640

約数和(自身を除く): 238873600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1240, 1280, 1984, 2039, 2480, 2560, 3968, 4078, 4960, 7936, 8156, 9920, 10195, 15872, 16312, 19840, 20390, 32624, 39680, 40780, 63209, 65248, 79360, 81560, 126418, 130496, 163120, 252836, 260992, 316045, 326240, 505672, 521984, 632090, 652480, 1011344, 1043968, 1264180, 1304960, 2022688, 2528360, 2609920, 4045376, 5056720, 5219840, 8090752, 10113440, 16181504, 20226880, 32363008, 40453760, 80907520, 161815040]

約数ペア:

[(1, 161815040), (2, 80907520), (4, 40453760), (5, 32363008), (8, 20226880), (10, 16181504), (16, 10113440), (20, 8090752), (31, 5219840), (32, 5056720), (40, 4045376), (62, 2609920), (64, 2528360), (80, 2022688), (124, 1304960), (128, 1264180), (155, 1043968), (160, 1011344), (248, 652480), (256, 632090), (310, 521984), (320, 505672), (496, 326240), (512, 316045), (620, 260992), (640, 252836), (992, 163120), (1240, 130496), (1280, 126418), (1984, 81560), (2039, 79360), (2480, 65248), (2560, 63209), (3968, 40780), (4078, 39680), (4960, 32624), (7936, 20390), (8156, 19840), (9920, 16312), (10195, 15872)]