205544220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{463}}^1$

素因数の和:640

約数の個数: 144

約数和(自身を含む): 675376128

約数和(自身を除く): 469831908

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 151, 196, 210, 245, 294, 302, 420, 453, 463, 490, 588, 604, 735, 755, 906, 926, 980, 1057, 1389, 1470, 1510, 1812, 1852, 2114, 2265, 2315, 2778, 2940, 3020, 3171, 3241, 4228, 4530, 4630, 5285, 5556, 6342, 6482, 6945, 7399, 9060, 9260, 9723, 10570, 12684, 12964, 13890, 14798, 15855, 16205, 19446, 21140, 22197, 22687, 27780, 29596, 31710, 32410, 36995, 38892, 44394, 45374, 48615, 63420, 64820, 68061, 69913, 73990, 88788, 90748, 97230, 110985, 113435, 136122, 139826, 147980, 194460, 209739, 221970, 226870, 272244, 279652, 340305, 349565, 419478, 443940, 453740, 489391, 680610, 699130, 838956, 978782, 1048695, 1361220, 1398260, 1468173, 1957564, 2097390, 2446955, 2936346, 3425737, 4194780, 4893910, 5872692, 6851474, 7340865, 9787820, 10277211, 13702948, 14681730, 17128685, 20554422, 29363460, 34257370, 41108844, 51386055, 68514740, 102772110, 205544220]

約数ペア:

[(1, 205544220), (2, 102772110), (3, 68514740), (4, 51386055), (5, 41108844), (6, 34257370), (7, 29363460), (10, 20554422), (12, 17128685), (14, 14681730), (15, 13702948), (20, 10277211), (21, 9787820), (28, 7340865), (30, 6851474), (35, 5872692), (42, 4893910), (49, 4194780), (60, 3425737), (70, 2936346), (84, 2446955), (98, 2097390), (105, 1957564), (140, 1468173), (147, 1398260), (151, 1361220), (196, 1048695), (210, 978782), (245, 838956), (294, 699130), (302, 680610), (420, 489391), (453, 453740), (463, 443940), (490, 419478), (588, 349565), (604, 340305), (735, 279652), (755, 272244), (906, 226870), (926, 221970), (980, 209739), (1057, 194460), (1389, 147980), (1470, 139826), (1510, 136122), (1812, 113435), (1852, 110985), (2114, 97230), (2265, 90748), (2315, 88788), (2778, 73990), (2940, 69913), (3020, 68061), (3171, 64820), (3241, 63420), (4228, 48615), (4530, 45374), (4630, 44394), (5285, 38892), (5556, 36995), (6342, 32410), (6482, 31710), (6945, 29596), (7399, 27780), (9060, 22687), (9260, 22197), (9723, 21140), (10570, 19446), (12684, 16205), (12964, 15855), (13890, 14798)]