20269040

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{743}}^1$

素因数の和:798

約数の個数: 80

約数和(自身を含む): 53139456

約数和(自身を除く): 32870416

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 743, 880, 1240, 1364, 1486, 1705, 2480, 2728, 2972, 3410, 3715, 5456, 5944, 6820, 7430, 8173, 11888, 13640, 14860, 16346, 23033, 27280, 29720, 32692, 40865, 46066, 59440, 65384, 81730, 92132, 115165, 130768, 163460, 184264, 230330, 253363, 326920, 368528, 460660, 506726, 653840, 921320, 1013452, 1266815, 1842640, 2026904, 2533630, 4053808, 5067260, 10134520, 20269040]

約数ペア:

[(1, 20269040), (2, 10134520), (4, 5067260), (5, 4053808), (8, 2533630), (10, 2026904), (11, 1842640), (16, 1266815), (20, 1013452), (22, 921320), (31, 653840), (40, 506726), (44, 460660), (55, 368528), (62, 326920), (80, 253363), (88, 230330), (110, 184264), (124, 163460), (155, 130768), (176, 115165), (220, 92132), (248, 81730), (310, 65384), (341, 59440), (440, 46066), (496, 40865), (620, 32692), (682, 29720), (743, 27280), (880, 23033), (1240, 16346), (1364, 14860), (1486, 13640), (1705, 11888), (2480, 8173), (2728, 7430), (2972, 6820), (3410, 5944), (3715, 5456)]