161904540

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{397}}^1\times {\mathrm{971}}^1$

素因数の和:1387

約数の個数: 96

約数和(自身を含む): 519934464

約数和(自身を除く): 358029924

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 397, 420, 794, 971, 1191, 1588, 1942, 1985, 2382, 2779, 2913, 3884, 3970, 4764, 4855, 5558, 5826, 5955, 6797, 7940, 8337, 9710, 11116, 11652, 11910, 13594, 13895, 14565, 16674, 19420, 20391, 23820, 27188, 27790, 29130, 33348, 33985, 40782, 41685, 55580, 58260, 67970, 81564, 83370, 101955, 135940, 166740, 203910, 385487, 407820, 770974, 1156461, 1541948, 1927435, 2312922, 2698409, 3854870, 4625844, 5396818, 5782305, 7709740, 8095227, 10793636, 11564610, 13492045, 16190454, 23129220, 26984090, 32380908, 40476135, 53968180, 80952270, 161904540]

約数ペア:

[(1, 161904540), (2, 80952270), (3, 53968180), (4, 40476135), (5, 32380908), (6, 26984090), (7, 23129220), (10, 16190454), (12, 13492045), (14, 11564610), (15, 10793636), (20, 8095227), (21, 7709740), (28, 5782305), (30, 5396818), (35, 4625844), (42, 3854870), (60, 2698409), (70, 2312922), (84, 1927435), (105, 1541948), (140, 1156461), (210, 770974), (397, 407820), (420, 385487), (794, 203910), (971, 166740), (1191, 135940), (1588, 101955), (1942, 83370), (1985, 81564), (2382, 67970), (2779, 58260), (2913, 55580), (3884, 41685), (3970, 40782), (4764, 33985), (4855, 33348), (5558, 29130), (5826, 27790), (5955, 27188), (6797, 23820), (7940, 20391), (8337, 19420), (9710, 16674), (11116, 14565), (11652, 13895), (11910, 13594)]