21578700

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1$

素因数の和:544

約数の個数: 144

約数和(自身を含む): 73495296

約数和(自身を除く): 51916596

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 20, 22, 25, 26, 30, 33, 39, 44, 50, 52, 55, 60, 65, 66, 75, 78, 100, 110, 130, 132, 143, 150, 156, 165, 195, 220, 260, 275, 286, 300, 325, 330, 390, 429, 503, 550, 572, 650, 660, 715, 780, 825, 858, 975, 1006, 1100, 1300, 1430, 1509, 1650, 1716, 1950, 2012, 2145, 2515, 2860, 3018, 3300, 3575, 3900, 4290, 5030, 5533, 6036, 6539, 7150, 7545, 8580, 10060, 10725, 11066, 12575, 13078, 14300, 15090, 16599, 19617, 21450, 22132, 25150, 26156, 27665, 30180, 32695, 33198, 37725, 39234, 42900, 50300, 55330, 65390, 66396, 71929, 75450, 78468, 82995, 98085, 110660, 130780, 138325, 143858, 150900, 163475, 165990, 196170, 215787, 276650, 287716, 326950, 331980, 359645, 392340, 414975, 431574, 490425, 553300, 653900, 719290, 829950, 863148, 980850, 1078935, 1438580, 1659900, 1798225, 1961700, 2157870, 3596450, 4315740, 5394675, 7192900, 10789350, 21578700]

約数ペア:

[(1, 21578700), (2, 10789350), (3, 7192900), (4, 5394675), (5, 4315740), (6, 3596450), (10, 2157870), (11, 1961700), (12, 1798225), (13, 1659900), (15, 1438580), (20, 1078935), (22, 980850), (25, 863148), (26, 829950), (30, 719290), (33, 653900), (39, 553300), (44, 490425), (50, 431574), (52, 414975), (55, 392340), (60, 359645), (65, 331980), (66, 326950), (75, 287716), (78, 276650), (100, 215787), (110, 196170), (130, 165990), (132, 163475), (143, 150900), (150, 143858), (156, 138325), (165, 130780), (195, 110660), (220, 98085), (260, 82995), (275, 78468), (286, 75450), (300, 71929), (325, 66396), (330, 65390), (390, 55330), (429, 50300), (503, 42900), (550, 39234), (572, 37725), (650, 33198), (660, 32695), (715, 30180), (780, 27665), (825, 26156), (858, 25150), (975, 22132), (1006, 21450), (1100, 19617), (1300, 16599), (1430, 15090), (1509, 14300), (1650, 13078), (1716, 12575), (1950, 11066), (2012, 10725), (2145, 10060), (2515, 8580), (2860, 7545), (3018, 7150), (3300, 6539), (3575, 6036), (3900, 5533), (4290, 5030)]