21985320

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{3739}}^1$

素因数の和:3767

約数の個数: 96

約数和(自身を含む): 76744800

約数和(自身を除く): 54759480

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 49, 56, 60, 70, 84, 98, 105, 120, 140, 147, 168, 196, 210, 245, 280, 294, 392, 420, 490, 588, 735, 840, 980, 1176, 1470, 1960, 2940, 3739, 5880, 7478, 11217, 14956, 18695, 22434, 26173, 29912, 37390, 44868, 52346, 56085, 74780, 78519, 89736, 104692, 112170, 130865, 149560, 157038, 183211, 209384, 224340, 261730, 314076, 366422, 392595, 448680, 523460, 549633, 628152, 732844, 785190, 916055, 1046920, 1099266, 1465688, 1570380, 1832110, 2198532, 2748165, 3140760, 3664220, 4397064, 5496330, 7328440, 10992660, 21985320]

約数ペア:

[(1, 21985320), (2, 10992660), (3, 7328440), (4, 5496330), (5, 4397064), (6, 3664220), (7, 3140760), (8, 2748165), (10, 2198532), (12, 1832110), (14, 1570380), (15, 1465688), (20, 1099266), (21, 1046920), (24, 916055), (28, 785190), (30, 732844), (35, 628152), (40, 549633), (42, 523460), (49, 448680), (56, 392595), (60, 366422), (70, 314076), (84, 261730), (98, 224340), (105, 209384), (120, 183211), (140, 157038), (147, 149560), (168, 130865), (196, 112170), (210, 104692), (245, 89736), (280, 78519), (294, 74780), (392, 56085), (420, 52346), (490, 44868), (588, 37390), (735, 29912), (840, 26173), (980, 22434), (1176, 18695), (1470, 14956), (1960, 11217), (2940, 7478), (3739, 5880)]