About the Number

108981990

108981989 ← → 108981991

2進数表記:110011111101110111011100110

漢数字表記:一億八百九十八万千九百九十

素因数分解:

2 1 × 3 3 × 5 1 × 13 1 × 61 1 × 509 1

素因数の和:599
約数の個数: 128
約数和(自身を含む): 318729600
約数和(自身を除く): 209747610

約数列:
[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 61, 65, 78, 90, 117, 122, 130, 135, 183, 195, 234, 270, 305, 351, 366, 390, 509, 549, 585, 610, 702, 793, 915, 1018, 1098, 1170, 1527, 1586, 1647, 1755, 1830, 2379, 2545, 2745, 3054, 3294, 3510, 3965, 4581, 4758, 5090, 5490, 6617, 7137, 7635, 7930, 8235, 9162, 11895, 13234, 13743, 14274, 15270, 16470, 19851, 21411, 22905, 23790, 27486, 31049, 33085, 35685, 39702, 42822, 45810, 59553, 62098, 66170, 68715, 71370, 93147, 99255, 107055, 119106, 137430, 155245, 178659, 186294, 198510, 214110, 279441, 297765, 310490, 357318, 403637, 465735, 558882, 595530, 807274, 838323, 893295, 931470, 1210911, 1397205, 1676646, 1786590, 2018185, 2421822, 2794410, 3632733, 4036370, 4191615, 6054555, 7265466, 8383230, 10898199, 12109110, 18163665, 21796398, 36327330, 54490995, 108981990]

約数ペア:
[(1, 108981990), (2, 54490995), (3, 36327330), (5, 21796398), (6, 18163665), (9, 12109110), (10, 10898199), (13, 8383230), (15, 7265466), (18, 6054555), (26, 4191615), (27, 4036370), (30, 3632733), (39, 2794410), (45, 2421822), (54, 2018185), (61, 1786590), (65, 1676646), (78, 1397205), (90, 1210911), (117, 931470), (122, 893295), (130, 838323), (135, 807274), (183, 595530), (195, 558882), (234, 465735), (270, 403637), (305, 357318), (351, 310490), (366, 297765), (390, 279441), (509, 214110), (549, 198510), (585, 186294), (610, 178659), (702, 155245), (793, 137430), (915, 119106), (1018, 107055), (1098, 99255), (1170, 93147), (1527, 71370), (1586, 68715), (1647, 66170), (1755, 62098), (1830, 59553), (2379, 45810), (2545, 42822), (2745, 39702), (3054, 35685), (3294, 33085), (3510, 31049), (3965, 27486), (4581, 23790), (4758, 22905), (5090, 21411), (5490, 19851), (6617, 16470), (7137, 15270), (7635, 14274), (7930, 13743), (8235, 13234), (9162, 11895)]

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