21640300

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:319

約数の個数: 72

約数和(自身を含む): 51996672

約数和(自身を除く): 30356372

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 103, 110, 191, 206, 220, 275, 382, 412, 515, 550, 764, 955, 1030, 1100, 1133, 1910, 2060, 2101, 2266, 2575, 3820, 4202, 4532, 4775, 5150, 5665, 8404, 9550, 10300, 10505, 11330, 19100, 19673, 21010, 22660, 28325, 39346, 42020, 52525, 56650, 78692, 98365, 105050, 113300, 196730, 210100, 216403, 393460, 432806, 491825, 865612, 983650, 1082015, 1967300, 2164030, 4328060, 5410075, 10820150, 21640300]

約数ペア:

[(1, 21640300), (2, 10820150), (4, 5410075), (5, 4328060), (10, 2164030), (11, 1967300), (20, 1082015), (22, 983650), (25, 865612), (44, 491825), (50, 432806), (55, 393460), (100, 216403), (103, 210100), (110, 196730), (191, 113300), (206, 105050), (220, 98365), (275, 78692), (382, 56650), (412, 52525), (515, 42020), (550, 39346), (764, 28325), (955, 22660), (1030, 21010), (1100, 19673), (1133, 19100), (1910, 11330), (2060, 10505), (2101, 10300), (2266, 9550), (2575, 8404), (3820, 5665), (4202, 5150), (4532, 4775)]