25216640

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 63810180

約数和(自身を除く): 38593540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 41, 62, 64, 80, 82, 124, 128, 155, 160, 164, 205, 248, 310, 320, 328, 410, 496, 620, 640, 656, 820, 961, 992, 1240, 1271, 1312, 1640, 1922, 1984, 2480, 2542, 2624, 3280, 3844, 3968, 4805, 4960, 5084, 5248, 6355, 6560, 7688, 9610, 9920, 10168, 12710, 13120, 15376, 19220, 19840, 20336, 25420, 26240, 30752, 38440, 39401, 40672, 50840, 61504, 76880, 78802, 81344, 101680, 123008, 153760, 157604, 162688, 197005, 203360, 307520, 315208, 394010, 406720, 615040, 630416, 788020, 813440, 1260832, 1576040, 2521664, 3152080, 5043328, 6304160, 12608320, 25216640]

約数ペア:

[(1, 25216640), (2, 12608320), (4, 6304160), (5, 5043328), (8, 3152080), (10, 2521664), (16, 1576040), (20, 1260832), (31, 813440), (32, 788020), (40, 630416), (41, 615040), (62, 406720), (64, 394010), (80, 315208), (82, 307520), (124, 203360), (128, 197005), (155, 162688), (160, 157604), (164, 153760), (205, 123008), (248, 101680), (310, 81344), (320, 78802), (328, 76880), (410, 61504), (496, 50840), (620, 40672), (640, 39401), (656, 38440), (820, 30752), (961, 26240), (992, 25420), (1240, 20336), (1271, 19840), (1312, 19220), (1640, 15376), (1922, 13120), (1984, 12710), (2480, 10168), (2542, 9920), (2624, 9610), (3280, 7688), (3844, 6560), (3968, 6355), (4805, 5248), (4960, 5084)]