21489570

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 40718430

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 27, 30, 38, 45, 54, 57, 59, 71, 90, 95, 114, 118, 135, 142, 171, 177, 190, 213, 270, 285, 295, 342, 354, 355, 426, 513, 531, 570, 590, 639, 710, 855, 885, 1026, 1062, 1065, 1121, 1278, 1349, 1593, 1710, 1770, 1917, 2130, 2242, 2565, 2655, 2698, 3186, 3195, 3363, 3834, 4047, 4189, 5130, 5310, 5605, 6390, 6726, 6745, 7965, 8094, 8378, 9585, 10089, 11210, 12141, 12567, 13490, 15930, 16815, 19170, 20178, 20235, 20945, 24282, 25134, 30267, 33630, 36423, 37701, 40470, 41890, 50445, 60534, 60705, 62835, 72846, 75402, 79591, 100890, 113103, 121410, 125670, 151335, 159182, 182115, 188505, 226206, 238773, 302670, 364230, 377010, 397955, 477546, 565515, 716319, 795910, 1131030, 1193865, 1432638, 2148957, 2387730, 3581595, 4297914, 7163190, 10744785, 21489570]

約数ペア:

[(1, 21489570), (2, 10744785), (3, 7163190), (5, 4297914), (6, 3581595), (9, 2387730), (10, 2148957), (15, 1432638), (18, 1193865), (19, 1131030), (27, 795910), (30, 716319), (38, 565515), (45, 477546), (54, 397955), (57, 377010), (59, 364230), (71, 302670), (90, 238773), (95, 226206), (114, 188505), (118, 182115), (135, 159182), (142, 151335), (171, 125670), (177, 121410), (190, 113103), (213, 100890), (270, 79591), (285, 75402), (295, 72846), (342, 62835), (354, 60705), (355, 60534), (426, 50445), (513, 41890), (531, 40470), (570, 37701), (590, 36423), (639, 33630), (710, 30267), (855, 25134), (885, 24282), (1026, 20945), (1062, 20235), (1065, 20178), (1121, 19170), (1278, 16815), (1349, 15930), (1593, 13490), (1710, 12567), (1770, 12141), (1917, 11210), (2130, 10089), (2242, 9585), (2565, 8378), (2655, 8094), (2698, 7965), (3186, 6745), (3195, 6726), (3363, 6390), (3834, 5605), (4047, 5310), (4189, 5130)]