30813820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{619}}^1$

素因数の和:778

約数の個数: 48

約数和(自身を含む): 68745600

約数和(自身を除く): 37931780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 131, 190, 262, 380, 524, 619, 655, 1238, 1310, 2476, 2489, 2620, 3095, 4978, 6190, 9956, 11761, 12380, 12445, 23522, 24890, 47044, 49780, 58805, 81089, 117610, 162178, 235220, 324356, 405445, 810890, 1540691, 1621780, 3081382, 6162764, 7703455, 15406910, 30813820]

約数ペア:

[(1, 30813820), (2, 15406910), (4, 7703455), (5, 6162764), (10, 3081382), (19, 1621780), (20, 1540691), (38, 810890), (76, 405445), (95, 324356), (131, 235220), (190, 162178), (262, 117610), (380, 81089), (524, 58805), (619, 49780), (655, 47044), (1238, 24890), (1310, 23522), (2476, 12445), (2489, 12380), (2620, 11761), (3095, 9956), (4978, 6190)]