19796768

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{191}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 20845792

約数列:

[1, 2, 4, 8, 16, 32, 41, 79, 82, 158, 164, 191, 316, 328, 382, 632, 656, 764, 1264, 1312, 1528, 2528, 3056, 3239, 6112, 6478, 7831, 12956, 15089, 15662, 25912, 30178, 31324, 51824, 60356, 62648, 103648, 120712, 125296, 241424, 250592, 482848, 618649, 1237298, 2474596, 4949192, 9898384, 19796768]

約数ペア:

[(1, 19796768), (2, 9898384), (4, 4949192), (8, 2474596), (16, 1237298), (32, 618649), (41, 482848), (79, 250592), (82, 241424), (158, 125296), (164, 120712), (191, 103648), (316, 62648), (328, 60356), (382, 51824), (632, 31324), (656, 30178), (764, 25912), (1264, 15662), (1312, 15089), (1528, 12956), (2528, 7831), (3056, 6478), (3239, 6112)]