621891340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:288

約数の個数: 144

約数和(自身を含む): 1574524224

約数和(自身を除く): 952632884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 61, 70, 98, 101, 103, 122, 140, 196, 202, 206, 244, 245, 305, 404, 412, 427, 490, 505, 515, 610, 707, 721, 854, 980, 1010, 1030, 1220, 1414, 1442, 1708, 2020, 2060, 2135, 2828, 2884, 2989, 3535, 3605, 4270, 4949, 5047, 5978, 6161, 6283, 7070, 7210, 8540, 9898, 10094, 10403, 11956, 12322, 12566, 14140, 14420, 14945, 19796, 20188, 20806, 24644, 24745, 25132, 25235, 29890, 30805, 31415, 41612, 43127, 43981, 49490, 50470, 52015, 59780, 61610, 62830, 72821, 86254, 87962, 98980, 100940, 104030, 123220, 125660, 145642, 172508, 175924, 208060, 215635, 219905, 291284, 301889, 307867, 364105, 431270, 439810, 509747, 603778, 615734, 634583, 728210, 862540, 879620, 1019494, 1207556, 1231468, 1269166, 1456420, 1509445, 1539335, 2038988, 2538332, 2548735, 3018890, 3078670, 3172915, 4442081, 5097470, 6037780, 6157340, 6345830, 8884162, 10194940, 12691660, 17768324, 22210405, 31094567, 44420810, 62189134, 88841620, 124378268, 155472835, 310945670, 621891340]

約数ペア:

[(1, 621891340), (2, 310945670), (4, 155472835), (5, 124378268), (7, 88841620), (10, 62189134), (14, 44420810), (20, 31094567), (28, 22210405), (35, 17768324), (49, 12691660), (61, 10194940), (70, 8884162), (98, 6345830), (101, 6157340), (103, 6037780), (122, 5097470), (140, 4442081), (196, 3172915), (202, 3078670), (206, 3018890), (244, 2548735), (245, 2538332), (305, 2038988), (404, 1539335), (412, 1509445), (427, 1456420), (490, 1269166), (505, 1231468), (515, 1207556), (610, 1019494), (707, 879620), (721, 862540), (854, 728210), (980, 634583), (1010, 615734), (1030, 603778), (1220, 509747), (1414, 439810), (1442, 431270), (1708, 364105), (2020, 307867), (2060, 301889), (2135, 291284), (2828, 219905), (2884, 215635), (2989, 208060), (3535, 175924), (3605, 172508), (4270, 145642), (4949, 125660), (5047, 123220), (5978, 104030), (6161, 100940), (6283, 98980), (7070, 87962), (7210, 86254), (8540, 72821), (9898, 62830), (10094, 61610), (10403, 59780), (11956, 52015), (12322, 50470), (12566, 49490), (14140, 43981), (14420, 43127), (14945, 41612), (19796, 31415), (20188, 30805), (20806, 29890), (24644, 25235), (24745, 25132)]