21474640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{1061}}^1$

素因数の和:1108

約数の個数: 80

約数和(自身を含む): 56889216

約数和(自身を除く): 35414576

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 176, 184, 220, 230, 253, 368, 440, 460, 506, 880, 920, 1012, 1061, 1265, 1840, 2024, 2122, 2530, 4048, 4244, 5060, 5305, 8488, 10120, 10610, 11671, 16976, 20240, 21220, 23342, 24403, 42440, 46684, 48806, 58355, 84880, 93368, 97612, 116710, 122015, 186736, 195224, 233420, 244030, 268433, 390448, 466840, 488060, 536866, 933680, 976120, 1073732, 1342165, 1952240, 2147464, 2684330, 4294928, 5368660, 10737320, 21474640]

約数ペア:

[(1, 21474640), (2, 10737320), (4, 5368660), (5, 4294928), (8, 2684330), (10, 2147464), (11, 1952240), (16, 1342165), (20, 1073732), (22, 976120), (23, 933680), (40, 536866), (44, 488060), (46, 466840), (55, 390448), (80, 268433), (88, 244030), (92, 233420), (110, 195224), (115, 186736), (176, 122015), (184, 116710), (220, 97612), (230, 93368), (253, 84880), (368, 58355), (440, 48806), (460, 46684), (506, 42440), (880, 24403), (920, 23342), (1012, 21220), (1061, 20240), (1265, 16976), (1840, 11671), (2024, 10610), (2122, 10120), (2530, 8488), (4048, 5305), (4244, 5060)]