21630440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41597}}^1$

素因数の和:41621

約数の個数: 32

約数和(自身を含む): 52413480

約数和(自身を除く): 30783040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41597, 83194, 166388, 207985, 332776, 415970, 540761, 831940, 1081522, 1663880, 2163044, 2703805, 4326088, 5407610, 10815220, 21630440]

約数ペア:

[(1, 21630440), (2, 10815220), (4, 5407610), (5, 4326088), (8, 2703805), (10, 2163044), (13, 1663880), (20, 1081522), (26, 831940), (40, 540761), (52, 415970), (65, 332776), (104, 207985), (130, 166388), (260, 83194), (520, 41597)]